Human disease - Concepts, Primary illness, Secondary illness, Terminal illness, Disease, Disorder

 

A disease is a specific abnormal condition that adversely affects the structure or function of all or part of an organism and is not immediately caused by external injury. Diseases are often considered medical conditions associated with specific signs and symptoms. Diseases can be caused by external factors such as pathogens or internal problems. For example, internal problems with the immune system can lead to a variety of different illnesses, including immunodeficiency, hypersensitivity, allergies, and various forms of autoimmune disorders.

In humans, the term disease is often used to describe any condition that causes pain, discomfort, distress, social problems, or death to the affected individual, or to those in contact with that individual. In this broad sense, it sometimes includes injuries, disabilities, disorders, syndromes, infections, various symptoms, abnormal behaviors, and unusual changes in structure and function, while in other cases and for other purposes, these may be considered distinct categories. Diseases can affect people not only physically but also mentally, as suffering from and living with a disease can change a person's outlook on life.

Death due to disease is called death from natural causes. There are four main types of disease: infectious diseases, deficiency diseases, hereditary diseases, and physiological diseases. Diseases can also be classified in other ways, such as communicable and non-communicable diseases. The most fatal diseases in humans are ischemic heart disease (blockage of blood flow), followed by stroke and COPD (lung disease). In developed countries, the diseases that cause the most illness are neuropsychiatric conditions, such as depression and anxiety.

Pathology, the study of disease, includes the study of etiology, or causes.

Concept

In many cases, the terms disease, disorder, morbidity, sickness, and illness are used interchangeably; however, there are situations when certain terms are considered preferable.

Disease

The term disease broadly refers to any condition that disrupts the body's normal functioning. Therefore, diseases are associated with a malfunction of the body's normal homeostatic processes. Generally, the term is used specifically for infectious diseases, which are clinically evident illnesses caused by the presence of pathogenic microbial agents such as viruses, bacteria, fungi, protozoa, multicellular organisms, and abnormal proteins called prions. Infections or colonization's that do not cause clinically evident disruptions to normal functioning, such as the presence of normal bacteria and yeast in the intestine, or passenger viruses, are not considered diseases. In contrast, an infection that is asymptomatic during its incubation period, but is expected to develop symptoms later, is generally considered a disease. Non-infectious diseases are all other diseases, including most cancers, heart disease, and genetic diseases.

Acquired Disease

An acquired disease is one that begins at some point in one's life; in contrast, a disease that is present from birth is called a congenital disease. Acquired may sound like it means "contagious," but it simply means acquired sometime after birth. It may also sound like it could mean a secondary disease, but an acquired disease can also be a primary disease.

Acute Illness

An acute illness is one that lasts for a short period of time (acute); this term can sometimes also mean a severe illness.

Chronic Condition or Chronic Disease

A chronic illness is one that persists over time, often for at least six months, but can also include illnesses that are expected to last a lifetime.

Congenital Disorder or Congenital Disease

A congenital disorder is one that is present at birth. It is often a genetic disease or disorder and may be inherited. It may also be the result of an infection transmitted directly from the mother, such as HIV/AIDS.

Genetic Disease

A genetic disorder or disease is caused by one or more genetic mutations. It is often inherited, but some mutations are random and new. Hereditary or Inherited Disease

A hereditary disease is a type of genetic disease caused by genetic mutations that are inherited (and can run in families).

                                                                                 

                                                                                         

Iatrogenic Disease

An iatrogenic disease or condition is one that results from medical intervention, whether as a side effect of treatment or an unintentional consequence.

Idiopathic Disease

The cause or source of an idiopathic disease is unknown. As medical science has advanced, many diseases with a completely unknown cause have had some aspects of their origin understood and therefore lost their idiopathic status. For example, when germs were discovered, it was discovered that they were caused by infections, but specific germs and diseases were not linked. In another example, it is known that autoimmunity causes some forms of diabetes mellitus type 1, although the specific molecular pathways through which this works are still not understood. It is also common to find that certain factors are associated with certain diseases; however, association does not necessarily imply causation. For example, a third factor may cause both the disease and its associated event.

Incurable disease

A disease that cannot be cured. Terminal illnesses are not necessarily life-threatening, and sometimes the symptoms can be treated so that the disease has little or no impact on quality of life.

Primary Illness

A primary illness is an illness caused by the underlying cause of the disease, while a secondary illness is a sequela or complication resulting from the primary illness. For example, the common cold is a primary illness, while rhinitis could be a potential secondary illness or sequela. The doctor must determine which primary illness, cold, or bacterial infection is causing the patient's secondary rhinitis in order to prescribe antibiotics.

Secondary Illness

A secondary illness is a sequela or complication of a previous, underlying illness, which is called the primary illness or simply the root cause. For example, a bacterial infection can be primary, in which a healthy person comes into contact with the bacteria and becomes infected, or it can be secondary to a primary cause, which prepares the body for infection. For example, a primary viral infection that weakens the immune system can lead to a secondary bacterial infection. Similarly, a primary burn that creates an open wound can become an entry point for bacteria, leading to a secondary bacterial infection.

Terminal illness

An incurable disease is one that ultimately leads to death. AIDS was once an incurable disease; although there is no definitive cure, it can be kept under control for a long time through the use of medication.

Disease

The terms 'illness' and 'sickness' are often used interchangeably with 'disease'; however, 'illness' is sometimes used specifically to describe a patient's personal and subjective experience of their condition. In this model, a person may have a 'disease' without experiencing 'illness' (i.e., a clearly identifiable medical condition that presents no symptoms, such as a sub-clinical infection or a visible physical abnormality that causes the individual no distress or discomfort); conversely, a person may experience 'illness' without having a 'disease' (such as when a perfectly healthy individual interprets a common experience or life situation as a medical problem—for instance, mistaking the feeling of malaise caused by embarrassment for an actual illness). Symptoms of 'illness' are often not the direct result of an infection itself, but rather a set of evolved bodily responses—known as 'sickness behavior'—that aid in eliminating the infection and facilitating recovery. Such symptoms of 'illness' can include lethargy, depression, loss of appetite, drowsiness, hyperalgesia (heightened sensitivity to pain), and an inability to concentrate.

Disorder

A 'disorder' is a type of functional disturbance or problem that may or may not present with specific symptoms. Medical disorders can be classified into various categories, such as mental, physical, genetic, emotional, behavioral, and functional disorders. The term 'disorder' is often considered more neutral and less stigmatizing than terms like 'disease' or 'illness,' making it preferable in certain contexts. In the field of mental health, the term 'mental disorder' is used to understand the complex interplay of biological, social, and psychological factors in psychiatric conditions; however, the term 'disorder' is also used in other areas of medical science—particularly to identify physical disorders not caused by infectious organisms, such as metabolic disorders.

Environment of India - Important facts about environment of india, Geography, Issues and Climate Change

 

Important facts about environment of india

India's environment includes some of the world's most biodiverse ecozones. The Deccan Traps, the Gangetic Plains, and the Himalayas are the main geographic regions. The country faces various forms of pollution as its main environmental issue and, as a developing country, is more vulnerable to the effects of climate change. India has laws to protect the environment and is one of the countries that has signed the Convention on Biological Diversity (CBD) Treaty. The Ministry of Environment, Forest and Climate Change and the Forest Departments of each state plan and implement environmental policies across the country.

India has some of the world's most biodiverse ecozones—deserts, high mountains, highlands, tropical and temperate forests, wetlands, plains, grasslands, riverine areas, and an island archipelago. It has three biodiversity hotspots: the Western Ghats, the Himalayas, and the Indo-Burma region. These hotspots contain numerous endemic species.

In 2021, approximately 713,789 km2 of land in the country was under forest cover, 92% of which was government owned. Only 22.7% of the land was forested, compared to the 33% recommended by the National Forest Policy Resolution (1952). Most of this cover is broadleaf deciduous trees, with one-sixth being sal and one-tenth being teak. Coniferous species are found in the northern highlands and include pine, juniper, and cedar.

India has 350 species of mammals, 375 species of reptiles, 130 species of amphibians, 20,000 species of insects, 19,000 species of fish, and 1,200 species of birds. The Asiatic lion, Bengal tiger, and leopard are the main predators; the country has the largest number of cat species than any other country. Elephants, Indian rhinoceroses, and eight species of deer are also found.

India has over 17,000 species of flowering plants, representing six percent of the world's total plant species. India also contains seven percent of the world's flora. India's diverse climatic conditions have contributed to a rich variety of flora. India has over 45,000 species of flora, many of which are endemic to the region. India is divided into eight main floristic regions: North-Western Himalayas, Eastern Himalayas, Assam, Indus Plain, Gangetic Plain, Deccan, Malabar and Andaman.

Geography

India lies on the Indian Plate, which is the northern part of the Indo-Australian Plate, whose continental crust forms the Indian subcontinent. The country lies north of the equator, between 8°4' and 37°6' north latitude and 68°7' and 97°25' east longitude. It is the seventh-largest country in the world, with a total area of ​​3,287,263 square kilometers (1,269,219 mi). India is 3,214 km (1,997 mi) long from north to south and 2,933 km (1,822 mi) long from east to west. It has a land border of 15,200 km (9,445 mi) and a coastline of 7,517 km (4,671 mi).

Four observations suggest that the Indian Plate and Eurasia collided 40 to 60 million years ago. One of these is that India has no mammal fossil record prior to about 50 million years ago. On its way, the Indian Plate passed over the Reunion hotspot, triggering volcanic activity that formed the Deccan Traps. Its collision with the Eurasian Plate gave rise to the Himalayas, and continued tectonic activity continues to make it an earthquake-prone region. The Gangetic Plain was formed by the Ganges and its tributaries depositing sediment in the area between the Himalayas and the Vindhya Range. The rock formations can be divided into Archean, Proterozoic (Dharwar System), Cuddapah System, Vindhyan System, Gondwana System, the Deccan Traps, Tertiary System, Pleistocene Period, and Recent formations.

Climate encompasses a wide variety of weather conditions across a large geographic scale and varied topography, making it difficult to make generalizations. Given India's size, bordered by the Himalayas, the Arabian Sea, the Bay of Bengal, and the Indian Ocean, the distribution of temperature and rainfall across the subcontinent varies greatly. Based on the Köppen system, which considers average monthly temperature, average monthly precipitation, and average annual precipitation, India hosts six major climate subtypes, ranging from arid deserts in the west, alpine tundra and glaciers in the north, and humid tropical regions supporting rainforests in the southwest and island regions. Many regions have distinct microclimates. The India Meteorological Department divides the seasons into four parts: winter (mid-December to mid-March), summer (mid-March to May), rainy season (June to September), and the retreating monsoon season (October to mid-December).

Issues

Pollution is one of the major environmental issues in India.

Water pollution is a major concern in the country. The main sources of water pollution are domestic, industrial, agricultural, and shipping wastewater. The largest source of water pollution in India is untreated sewage. Other sources of pollution include agricultural runoff and unregulated small-scale industries. Most rivers, lakes, and surface water are polluted.

                                                                                   

   

Land Pollution: The main causes of soil (or land) pollution are soil erosion, excessive use of chemical fertilizers and pesticides, accumulation of solid and liquid waste, forest fires, and waterlogging. This can be reduced by judicious use of chemical fertilizers and pesticides and by treating wastewater before use for irrigation. Due to a growing population and increasing consumption of food grains, more and more rain-fed croplands are being irrigated using ground and surface water. Irrigated land is gradually losing its fertility, turning into saline, alkaline soil.

Air pollution is another concern in the country. A major source of this is matter emitted from the burning of fossil fuels. Particles in the air, such as soot, smoke, and dust, can be harmful depending on the chemical and physical composition of the pollutants. They can affect the climate and reduce the scattering of solar radiation in the atmosphere.

Noise pollution: This can be described as a state of discomfort or stress caused by unwanted high-intensity sound. It increases in proportion to urbanization and industrialization.

Circular Economy and Waste Management

India is on the path to adopting circular economy techniques to address the growing challenges of waste management in a growing country. The country generates approximately 62 million tons of solid waste annually, of which only 75% is collected and 20% is processed. In an effort to address plastic waste, the government banned single-use plastics by 2022 and established EPR frameworks for e-waste and packaging material management. Initiatives like the Swachh Bharat Mission have led to a dramatic increase in waste collection in metropolitan and urban areas, but material segregation remains inadequate, and informal recycling systems remain hampered.

Good examples include Indore's waste segregation and recycling programs, which have made it India's cleanest city. Corporations are adopting circular practices by recycling steel scrap, while rural areas are engaging in community composting. Waste-to-energy plants, although underutilized, offer a potential solution for non-recyclable waste. However, scaling up these models requires better infrastructure, public awareness, and greater investment in technology.

Climate Change

As a developing country, India is more vulnerable to the impacts of climate change because it relies on climate-sensitive sectors such as agriculture and forestry. Low per capita income and a small public budget also reduce financial adjustment capacity. The country is vulnerable to the immediate socio-economic impacts of climate change. A 2002 study found that the country's temperature increased by approximately 0.57°C every 100 years.

Weak infrastructure also means that people are more exposed to climate change and less resilient. For example, as of 2015, only 124 million Indians were connected to sewers and 297 million to septic tanks. The rest rely on pit latrines or open defecation, posing a significant risk of waterborne diseases during floods – which will become more frequent and severe with climate change. These risks are more acute in urban areas, where high populations mean basic infrastructure options may not be adequate. Furthermore, many of India's largest cities are located in floodplains and deltas, making them highly vulnerable to climate hazards such as sea-level rise, storm surges, and cyclones.

Although India still has a low average per capita income, the country is now the third-largest emitter of greenhouse gas emissions, after China and the USA. The central government has pledged to reduce the emissions intensity of gross domestic product by 20-25% by 2020 compared to 2005 levels. India has also made significant commitments to expand its renewable energy supply, improve energy efficiency, build mass transit, and take other measures to reduce its emissions. There is evidence that many of these climate actions could yield significant benefits beyond reducing India's carbon footprint. Many low-carbon measures are economically attractive, including more efficient air conditioners, parking demand management, gasification, and vehicle performance standards. Others also offer social benefits: for example, if countries promoted renewable energy technologies over fossil fuels and walking/cycling/public transport over private vehicles, air quality in Indian cities could improve significantly.

Western education : Pre-contemporary history outside the West, Comparison with other education systems

Western education is a method of education that originated in or is primarily characteristic of the Western world.

History

Ancient era

This section is part of the topic of classical education.

Classical education refers to an ancient method of teaching that has its roots in ancient Greece and Rome, where the foundations of Western intellectual and cultural life were laid. Essentially, classical education is based on the study of the liberal arts, which historically included the trivium (grammar, rhetoric, and logic) and the quadrivium (arithmetic, geometry, music, and astronomy). This educational model aimed to develop well-rounded individuals equipped with the knowledge and skills necessary to participate in public life, think critically, and cultivate moral and intellectual virtues.

In ancient Greece, the classical curriculum emerged from the educational practices of philosophers like Socrates, Plato, and Aristotle, who emphasized dialectical reasoning and the search for truth. The Roman Empire adopted and adapted these Greek educational ideals, emphasizing the development of rhetoric and speaking skills, which were considered essential for participation in civic life. As these classical ideas were preserved and developed during the Middle Ages, they became the foundation of the educational systems that emerged in Europe, particularly in monastic and cathedral schools.

The Renaissance marked a major shift in classical education, as scholars in Europe rediscovered and embraced the texts and ideas of antiquity. Humanists of this period promoted the study of classical languages, literature, and philosophy, believing them essential to the formation of good and informed citizens. This shift continued into the Age of Enlightenment, where classical education played a key role in shaping intellectual movements that emphasized reason, individualism, and secularism.

Despite significant changes over the centuries, classical education has maintained a lasting influence on Western thought and educational methods. Today, its legacy can be seen in the curriculum of liberal arts colleges, the revival of classical Christian education, and ongoing debates about the need for classical studies in a modern, globalized world.

Modern era

This section is an excerpt from Progressive education.

Progressive education or educational progressivism, is a pedagogical movement that began in the late 19th century and has persisted in various forms to the present. In Europe, progressive education took the form of the New Education Movement. The term progressive was engaged to distinguish this education from the traditional curricula of the 19th century, which was rooted in classical preparation for the early-industrial university and strongly differentiated by social class. By contrast, progressive education finds its roots in modern, post-industrial experience. Most progressive education programs have these qualities in common:

Emphasis on learning by doing – hands-on projects, expeditionary learning, experiential learning

Integrated curriculum focused on thematic units

Strong emphasis on problem solving and critical thinking

Group work and development of social skills

Understanding and action as the goals of learning as opposed to rote knowledge

Collaborative and cooperative learning projects

Education for social responsibility and democracy

Integration of community service and service learning projects into the daily curriculum

Selection of subject content by looking forward to ask what skills will be needed in future society

De-emphasis on textbooks in favor of varied learning resources

Emphasis on lifelong learning and social skills

Assessment by evaluation of child's projects and productions

Pre-contemporary history outside the West

The introduction of Western education to the rest of the world was largely through imperialism. This influenced how Western education was adopted and impacted the world.

                                                                                 

                                                                                      

Africa

This section is part of 'Education in Africa & Overview of Education in Colonial Africa'.

With the beginning of the colonial period in the 19th century, traditional African education began to decline as the primary mode of education. European military forces, missionaries, and colonizers were all willing and able to modify existing traditions to meet their needs and desires. Colonial powers like Spain, Portugal, Belgium, and France established colonies on the continent without establishing any educational systems. Because the primary focus of colonization was to profit from the commercial colonial economy, cash crop production, and raw material extraction, other physically demanding jobs were prioritized. These economies did not grow to the point of requiring more skill or labor; therefore, there was a greater demand for more demanding labor, while those requiring less skill were more demanding. Due to these circumstances, there was little demand for educating or training the colonized population. 

Asia

East Asia

In China, when reformers were trying to cope with foreign influence in the late 19th century, they decided to reorganize Chinese society through a process of self-consolidation, which included the adoption of ideas from the West.

Even before the Edo period, Japan had developed considerable contact with Western knowledge through Rangaku (Dutch learning). While maintaining its isolationist Sakoku policy, Japan permitted limited trade with the Dutch East India Company at Dejima, Nagasaki. This unique arrangement allowed Japanese scholars to study Western medicine, astronomy, mathematics, and other sciences through Dutch books and interaction with Dutch traders. Rangaku scholars such as Sugita Genpaku and Maeno Ryotaku produced groundbreaking translations of Dutch medical texts, including the influential "Kaitai Shinsho" (New Book of Anatomy), which introduced Western medical knowledge to Japan. This early exposure to Western learning through the Dutch connection laid an important foundation for Japan's later modernization efforts during the Meiji era, when Japan sought to further modernize itself by learning from the West. It sent scholars and diplomats to Western countries to learn from their educational systems.

South Asia

This section covers the history of education in the Indian subcontinent and the colonial era.

The Jesuits introduced India to both the European college system and book printing by establishing St. Paul's College in Goa in 1542. French traveler François Pyrard de Laval, who visited Goa around 1608, described St. Paul's College and praised the wide range of subjects offered there for free. Like many other European travelers who visited the college, he reported that it had 3,000 students at the time, drawn from missions across Asia. Its library was one of the largest in Asia, and the first printing press in the region was installed there in September 1556.

The British began colonizing India in the late 18th century and began imposing Western education by the early 19th century. They considered this a very positive step, feeling it was a way to civilize the people. Native kings and princes also sometimes took such education to understand how to deal with the British threat.

Comparison with other education systems

Asian Education

Chinese or Eastern education is compared to Western education on the grounds that its aim is to encourage people to adopt the discipline necessary for learning, so that they can bring honor to their families.

Islamic education

Since the colonial era, Muslim leaders have criticized Western education for failing to impart moral values, and its secular nature has also been viewed as problematic.

World War II - Start and end dates and Background of the war, The situation after World War I, European Treaties

World War II (September 1, 1939 – September 2, 1945) was a global conflict between two coalitions: the Allies and the Axis Powers. Nearly every nation in the world participated, and many mobilized their resources for total war. Tanks and aircraft played a major role, the latter enabling the strategic bombing of cities and the delivery of the only nuclear weapons used in warfare. World War II is the deadliest conflict in history, killing over 60 million people. Millions more died in massacres, including the Holocaust, and from genocide, starvation, and disease. Following the Allied victory, Germany, Austria, Japan, and Korea were occupied, and German and Japanese leaders were tried for war crimes.

The causes of World War II included unresolved tensions following World War I, and the rise of fascism in Europe and militarism in Japan. Key events leading up to the war included Japan's invasion of Manchuria in 1931, the Spanish Civil War, the outbreak of the Second Sino-Japanese War in 1937, and Germany's occupation of Austria and the Sudetenland. World War II is generally considered to have begun on September 1, 1939, when Nazi Germany, led by Adolf Hitler, invaded Poland, prompting the United Kingdom and France to declare war on Germany. In mid-September, the Soviet Union also invaded Poland, and it was partitioned between Germany and the Soviet Union under the Molotov–Ribbentrop Pact. In 1940, the Soviet Union occupied the Baltic countries and parts of Finland and Romania, while Germany occupied Norway, Belgium, Luxembourg, and the Netherlands. After the fall of France in June 1940, the war continued primarily between Germany, now aided by Fascist Italy, and the British Empire/British Commonwealth, with fighting in the Balkans, the Mediterranean and Middle East, East Africa, the aerial Battle of Britain and the Blitz, and the naval Battle of the Atlantic. By mid-1941, Yugoslavia and Greece had also fallen to the Axis. In June 1941, Germany invaded the Soviet Union, opening the Eastern Front and initially occupying large areas alongside Axis allies.

In December 1941, Japan attacked American and British territories in Asia and the Pacific, including Pearl Harbor in Hawaii, leading the United States to join the war against the Axis. Japan conquered coastal China and much of Southeast Asia, but its advance in the Pacific was halted at the Battle of Midway in June 1942. In early 1943, Axis forces were defeated in North Africa and at Stalingrad in the Soviet Union. In July, the Allied invasion of Italy ended its fascist regime, and Allied attacks in the Pacific and the Soviet Union forced Axis forces to retreat on all fronts. In 1944, the Western Allies invaded France at Normandy, and the Soviet Union advanced in Central Europe. Meanwhile, Japan suffered major setbacks, including the weakening of its navy by the United States, the loss of key islands in the Western Pacific, and defeats in South-Central China and Burma.

The war in Europe ended with the liberation of German-occupied territories and the Allied invasion of Germany, resulting in the capture of Berlin by Soviet troops and Germany's unconditional surrender on May 8, 1945. On August 6 and 9, the US dropped atomic bombs on Hiroshima and Nagasaki, Japan. Faced with the threat of Allied attack and the possibility of atomic bombing, and the Soviet Union's declaration of war and invasion of Manchuria, Japan announced its unconditional surrender on 15 August, and signed the surrender document on 2 September 1945.

World War II transformed the world's political, economic, and social structure, laying the foundation for international relations for the rest of the 20th century and into the 21st. The United Nations was created to promote international cooperation and prevent future conflicts, with the victorious major powers—China, France, the Soviet Union, the UK, and the US—becoming permanent members of its Security Council. The Soviet Union and the US emerged as rival superpowers, leading to the Cold War that lasted half a century. Following the devastation of Europe, the influence of its major powers diminished, leading to the decolonization of Africa and Asia. Many countries whose industries had suffered losses embarked on economic recovery and expansion.

Start and end dates

Most historians agree that World War II began with the German invasion of Poland on September 1, 1939, and the United Kingdom and France's declaration of war on Germany two days later. Other proposed start dates for the Pacific War include the outbreak of the Second Sino-Japanese War on July 7, 1937, or the first Japanese invasion of Manchuria on September 18, 1931. Other proposed start dates for World War II include the Italian invasion of Abyssinia on October 3, 1935. British historian Antony Beevor places the beginning of World War II at the Battles of Khalkhin Gol, fought between Japan and the forces of Mongolia and the Soviet Union from May to September 1939. Others consider the Spanish Civil War to be the beginning or the beginning of World War II.

There is also disagreement on the exact date the war ended. At the time, it was generally believed that the war ended with the armistice of August 15, 1945 (V-J Day), rather than with Japan's formal surrender on September 2, 1945, which officially ended the war in Asia. A peace treaty was signed between Japan and the Allies in 1951. A 1990 treaty on the future of Germany allowed East and West Germany to be reunited. No formal peace treaty was ever signed between Japan and the Soviet Union, although the state of war between the two countries was ended by the 1956 Soviet–Japanese Joint Declaration, which also restored full diplomatic relations between them.

                                                                                 

      

Background of the war

The situation after World War I

World War I completely altered the political map of Europe with the defeat of the Central Powers – Austria-Hungary, Germany, Bulgaria, and the Ottoman Empire – and the Bolshevik seizure of power in Russia in 1917, creating the Soviet Union. Meanwhile, victorious World War I allies, such as France, Belgium, Italy, Romania, and Greece, gained territory, and the collapse of the Austro-Hungarian, Ottoman, and Russian empires led to the formation of new nation-states.

To prevent a future world war, the Paris Peace Conference of 1920 established the League of Nations. The organization's primary goals were to prevent armed conflict through collective security, military and naval disarmament, and the resolution of international disputes through peaceful negotiations and arbitration.

Despite strong pacifist sentiment after World War I, irredentist and revanchist nationalism emerged in many European countries. These sentiments were particularly strong in Germany, as the Treaty of Versailles had resulted in significant territorial, colonial, and financial losses. Under the treaty, Germany lost approximately 13 percent of its territory and all of its foreign lands, while German occupation of other countries was prohibited, reparations were imposed, and limits were placed on the size and capabilities of the country's military.

Germany and Italy

The German Revolution of 1918–1919 ended the German Empire, and a democratic government was established, later known as the Weimar Republic. The interwar period was marked by conflict between supporters of the new republic and staunch opponents on both the political right and left. Italy, as an Entente ally, had gained some territorial gains after the war; however, Italian nationalists were angry that the promises made by the United Kingdom and France to Italy upon Italy's entry into the war were not fulfilled in the peace settlement. From 1922 to 1925, the Fascist movement, led by Benito Mussolini, seized power in Italy with a nationalist, totalitarian, and class collaborative agenda that abolished representative democracy, suppressed socialist, left-wing, and liberal forces, and pursued an aggressive expansionist foreign policy aimed at making Italy a world power, promising to create a "New Roman Empire".

After a failed attempt to overthrow the German government in 1923, Adolf Hitler finally became Chancellor of Germany in 1933 when President Paul von Hindenburg and the Reichstag appointed him. After Hindenburg's death in 1934, Hitler declared himself Führer of Germany and abolished democracy, supporting a radical, racially motivated change in the world order, and soon launched a massive rearmament campaign. France, in an attempt to cement its alliance with Italy, gave Italy free rein in Ethiopia, which Italy wanted as a colonial possession. The situation worsened in early 1935 when the Saar Basin region was legally reintegrated into Germany, and Hitler rejected the Treaty of Versailles, accelerated his rearmament program, and began conscription.

European treaties

In April 1935, the United Kingdom, France, and Italy formed the 'Stresa Front' to contain Germany—a significant step towards military globalization; however, in June of the same year, the United Kingdom concluded a separate naval agreement with Germany, thereby easing previously imposed restrictions. Concerned by Germany's intentions to seize vast territories in Eastern Europe, the Soviet Union drafted a mutual assistance pact with France. Yet, before it could be implemented, the Franco-Soviet agreement had to navigate the bureaucratic processes of the League of Nations, effectively rendering it ineffective. Alarmed by unfolding events in Europe and Asia, the United States passed the 'Neutrality Act' in August of that same year.

In March 1936, Hitler violated the Treaties of Versailles and Locarno by remilitarizing the Rhineland; he faced little opposition due to the policy of appeasement. In October 1936, Germany and Italy formed the Rome–Berlin Axis. A month later, Germany and Japan signed the Anti-Comintern Pact, which Italy also joined the following year. 

World War I - the beginning of the destruction of the world, Background of the war, Conflict in the Balkans

 

The First World War, or the First World War (July 28, 1914 – November 11, 1918), also known as the Great War, was a global conflict between two coalitions: the Allies (or Entente) and the Central Powers. The main areas of conflict included Europe and the Middle East, as well as parts of Africa and the Asia-Pacific. The conflict saw significant developments in weapons such as tanks, aircraft, artillery, machine guns, and chemical weapons. One of the bloodiest conflicts in history, it resulted in approximately 30 million military casualties and 8 million civilian deaths from war-related causes and genocide. The movement of large numbers of people was a major factor in the deadly Spanish flu pandemic.

The causes of World War I included the rise of the German Empire and the decline of the Ottoman Empire, which disrupted the long-standing balance of power in Europe, exacerbated imperial rivalries, and triggered an arms race between the major powers. Rising tensions in the Balkans reached a peak on June 28, 1914, when Bosnian Serb Gavrilo Princip assassinated Franz Ferdinand, heir to the Austro-Hungarian throne. Austria-Hungary blamed Serbia and declared war on July 28. After Russia came to Serbia's defense, Germany declared war on Russia and France, who had formed an alliance. The United Kingdom joined the war after Germany invaded Belgium, and the Ottoman Empire joined the Central Powers in November. Germany's strategy in 1914 was to quickly defeat France and then send its army eastward. However, its advance was halted in September, and by the end of the year, the Western Front consisted of a nearly continuous line of trenches from the English Channel to Switzerland. The Eastern Front was more fortified, but despite costly offensives, neither side achieved significant gains. Italy, Bulgaria, Romania, Greece and other countries joined the war from 1915 onwards.

Major battles such as Verdun, the Somme, and Passchendaele failed to break the logjam on the Western Front. In April 1917, after Germany resumed unrestrained submarine warfare against Atlantic shipping, the United States joined the Allies. Later that year, the Bolsheviks seized power in Russia in the October Revolution; Soviet Russia signed an armistice with the Central Powers in December, followed by a separate peace treaty in March 1918. That month, Germany launched a Spring Offensive in the west, which, despite initial successes, exhausted and demoralized the German army. The Allied Hundred Days Offensive, which began in August 1918, led to the collapse of the German front line. Following the Vardar Offensive, Bulgaria signed an armistice in late September. By early November, the Allies had signed armistices with the Ottomans and Austria-Hungary, leaving Germany isolated. Facing revolution at home, Kaiser Wilhelm II abdicated on November 9, and the war ended with the Armistice of November 11, 1918.

The Paris Peace Conference of 1919-1920 imposed compromises on the defeated powers. Under the Treaty of Versailles, Germany lost considerable territory, was stripped of its weapons, and was required to pay substantial war reparations to the Allies. The collapse of the Russian, German, Austro-Hungarian, and Ottoman empires created new national boundaries and led to the creation of newly independent countries such as Poland, Finland, the Baltic countries, Czechoslovakia, and Yugoslavia. The League of Nations was established to maintain world peace, but its failure to manage the instability of the interwar period contributed to the outbreak of World War II in 1939.

Before World War II, the events of 1914–1918 were commonly referred to as the Great War or simply the World War. In August 1914, The Independent said of the conflict, "This is the Great War. It deserves its own name." Ten years after its end, many expected it to be "the war to end all wars" because of its immense destruction and high death toll. The term First World War was first used in September 1914, when German biologist and philosopher Ernst Haeckel wrote that the ongoing "European War" would become "the first world war in the full sense of the word."

Background of the war

Political and Military Alliances

For most of the 19th century, the major European powers maintained a tenuous balance of power known as the Concert of Europe. After 1848, this was challenged by Britain's descent into splendid isolation, the decline of the Ottoman Empire, New Imperialism, and the rise of Prussia under Otto von Bismarck. Victory in the Franco-Prussian War of 1870–1871 allowed Bismarck to consolidate a German Empire. After 1871, French policy aimed to avenge this defeat and expand France's colonial empire.

In 1873, Bismarck negotiated the League of the Three Emperors, comprising Austria-Hungary, Russia, and Germany. After the Russo-Turkish War of 1877–1878, the League was dissolved due to Austrian concerns about growing Russian influence in the Balkans, an area they considered of vital strategic interest. Germany and Austria-Hungary formed the Dual Alliance in 1879, which became the Triple Alliance when Italy joined in 1882. For Bismarck, the purpose of these agreements was to isolate France so that the three empires could resolve any disputes among themselves. In 1887, Bismarck created the Reinsurance Treaty, a secret agreement between Germany and Russia that would remain neutral if either France or Austria-Hungary were attacked.

                                                                                 

      

For Bismarck, peace with Russia was the foundation of German foreign policy, but in 1890, Wilhelm II forced him to retire. The latter was persuaded by his new Chancellor, Leo von Caprivi, not to renew the Reinsurance Treaty. This led France to agree to the Franco-Russian Alliance in 1894, followed by the Entente Cordiale with Britain in 1904. The Triple Entente was completed by the Anglo-Russian Convention of 1907. Although these were not formal alliances, by resolving long-standing colonial disputes in Asia and Africa, British support for either France or Russia in any future conflict became a possibility. This was further exacerbated by British and Russian support for France against Germany during the Agadir Crisis of 1911.

Germany's economic and industrial power continued to grow rapidly after 1871. With the support of Wilhelm II, Admiral Alfred von Tirpitz used this growth to build an Imperial German Navy that could rival the British Royal Navy. This policy was based on the work of US naval author Alfred Thayer Mahan, who argued that a blue-water navy was essential to projecting power worldwide; Tirpitz had his books translated into German, while Wilhelm made them mandatory reading for his advisors and senior military staff.

Bismarck opposed any attempt to compete with the Royal Navy, believing that Britain would not interfere in Europe as long as its maritime dominance was secure. His removal in 1890 led to a change in policy and an arms race between the Anglo-German navies. Despite the enormous sums spent by Tirpitz, the launch of HMS Dreadnought in 1906 rendered every existing battleship obsolete, giving the British a technological advantage they never relinquished. Ultimately, Germany invested enormous resources in building a navy large enough to trouble Britain, but could not defeat it. In 1911, Chancellor Theobald von Bethmann-Hollweg conceded defeat, leading to the Rüstungswende, or 'turning point on armaments,' when he shifted spending from the navy to the army.

This decision was driven by German concerns about the speed of Russia's recovery following its defeat in the Russo-Japanese War and the subsequent Russian Revolution of 1905. Economic reforms led to a significant expansion of railway and transportation infrastructure after 1908, especially along its western border. Since Germany and Austria-Hungary relied on rapid mobilization to compensate for their numerical weakness compared to Russia, the threat posed by closing this gap was more important than confronting the Royal Navy. In 1913, Germany increased its standing army by 170,000 men, followed by France's extension of compulsory military service from two to three years, prompting similar measures from the Balkan countries, Italy, the Ottoman Empire, and Austria-Hungary. Accurate figures are difficult to calculate due to differences in expenditure categories, which often exclude civilian infrastructure projects, such as railways, which had logistical significance and military applications. However, from 1908 to 1913, military expenditures for the six major European powers actually increased by more than 50%.

Conflict in the Balkans

In the years leading up to 1914, the Balkan region faced numerous crises as other powers sought to capitalize on the decline of the Ottoman Empire. Pan-Slavic and Orthodox Russia viewed itself as the protector of Serbia and other Slavic nations, yet it also desired that the strategically vital Bosphorus Strait remain under the control of a weak Ottoman government rather than an ambitious Slavic power like Bulgaria. Russia had its sights set on northeastern Anatolia, while the claims of its Balkan allies frequently clashed with one another. These conflicting interests divided Russian policymakers and further exacerbated instability in the region.

Austrian leaders believed that the Balkan region was essential for the survival of their empire and viewed Serbian expansion as a direct threat. The Bosnian Crisis of 1908–1909 began when Austria annexed the former Ottoman territories of Bosnia and Herzegovina—which it had occupied since 1878—into its empire. Although European powers condemned this unilateral move—which coincided with Bulgaria's declaration of independence from the Ottoman Empire—they ultimately accepted it, as no consensus could be reached on how to resolve the situation. Some historians view this as a critical escalation of tensions that eliminated any possibility of cooperation between Austria and Russia in the Balkans and also damaged diplomatic relations with Serbia and Italy.

Tensions escalated after the Ottoman Empire's weakness was exposed during the Italo-Turkish War (1911–1912) and the formation of the 'Balkan League'—an alliance comprising Serbia, Bulgaria, Montenegro, and Greece. During the First Balkan War (1912–1913), the League rapidly seized most of the Ottoman Empire's territories in the Balkans, taking outside observers by surprise. Austria began partial military mobilization after Serbia occupied Adriatic ports; this process commenced on November 21, 1912, and included troops stationed along the Russian border in Galicia. In response, the Russian government decided against mobilizing its own forces, as it did not wish to trigger a war.

In 1913, the Great Powers attempted to reassert their control through the Treaty of London. This treaty established an independent Albania and expanded the territories of Bulgaria, Serbia, Montenegro, and Greece. However, disputes among the victors triggered the Second Balkan War—a conflict lasting 33 days—when Bulgaria attacked Serbia and Greece on June 16, 1913; Bulgaria was defeated and forced to cede most of Macedonia to Serbia and Greece, and Southern Dobruja to Romania. Consequently, even countries like Serbia and Greece, which had benefited from the Balkan Wars, felt they had not received their "just due." Meanwhile, it became clear to Austria just how indifferent other powers, including Germany, were to its concerns. This mix of resentment, nationalism, and insecurity helps explain why the Balkans came to be known as the "powder keg of Europe" in the period leading up to 1914.

The East India Company in India - History of the East India Company, Formation of the company

 

The East India Company was founded in 1600 and dissolved in 1874. It was established to trade in the Indian Ocean region, initially with the East Indies (the Indian subcontinent and Southeast Asia) and later with East Asia. The company eventually established control over large parts of the Indian subcontinent and Hong Kong. At its peak, the company was, in many ways, the largest corporation in the world and had its own armed forces, including three Presidency armies with approximately 260,000 soldiers.

Initially named "The Governor and Company of Merchants of London Trading into the East Indies," the company was responsible for approximately half of the world's trade in the mid-1700s and early 1800s, particularly in goods such as cotton, silk, indigo, sugar, salt, spices, ginger, tea, precious stones, and later, opium. The company also initiated British rule in the Indian subcontinent.

Ultimately, the company ruled over large parts of the Indian subcontinent, wielding military power and assuming administrative responsibilities. The company's territory in the region gradually expanded after the Battle of Plassey in 1757, and by 1858, most of what is now India, Pakistan, and Bangladesh was either directly under the company's control or a princely state closely allied to it by treaty. Following the Indian Rebellion of 1857, under the Government of India Act of 1858, the British government assumed direct control over what is now Bangladesh, Pakistan, Myanmar, Sri Lanka, and India, thus establishing the British Indian Empire.

Later, despite increasing government intervention, the company faced financial difficulties. Under the provisions of the East India Stock Dividend Redemption Act passed a year earlier, the company was dissolved in 1874, as by then the Government of India Act had rendered it an unnecessary, powerless, and outdated institution. The British government took over the administrative responsibilities of the company, and its military units were incorporated into the British army.

History

Beginnings

In 1577, Francis Drake set sail from England on an expedition to plunder Spanish settlements in South America in search of gold and silver. Sailing on the ship named the Golden Hind, he completed this task and then crossed the Pacific Ocean in 1579, a route then known only to the Spanish and Portuguese. Drake eventually reached the East Indies, arriving near the Moluccas, known as the Spice Islands, and met with Sultan Babullah. In exchange for linen, gold, and silver, the English obtained various types of valuable spices, including cloves and nutmeg. Drake returned to England in 1580 and became a national hero; his voyage brought considerable wealth to the English treasury and yielded investors a return of approximately 5,000 percent.

                                                                                 

      

Immediately following the defeat of the Spanish Armada in 1588, the seizure of Spanish and Portuguese ships and their cargo gave English adventurers the opportunity to travel the world in search of riches. London merchants requested permission from Elizabeth I to sail into the Indian Ocean. Their aim was to break the Spanish and Portuguese monopoly on the Far Eastern trade. Elizabeth granted permission, and in 1591, James Lancaster and two other ships, financed by the Levant Company, sailed on the Bonaventure from the Cape of Good Hope to the Arabian Sea, thus becoming the first English expedition to reach India.

The greatest prize for promoting English trade was the capture of the large Portuguese carrack ship, Madre de Deus, by Walter Raleigh and the Earl of Cumberland at the Battle of Flores on August 13, 1592. When it arrived in Dartmouth, it was the largest ship ever seen in England, and it carried chests filled with precious stones, pearls, gold, silver coins, ambergris, textiles, carpets, black pepper, cloves, cinnamon, nutmeg, benzoin (a highly fragrant balsamic resin used in perfumes and medicines), red dye, cochineal, and ivory. The ship's logbook was also invaluable, containing important information about trade routes to China, India, and Japan. In 1596, three more English ships set sail for the East, but all were lost at sea. However, a year later, Ralph Fitch arrived; he was an adventurous trader who, along with his companions, had undertaken an amazing nine-year journey through Mesopotamia, the Persian Gulf, the Indian Ocean, India, and Southeast Asia. Fitch was consulted on matters relating to India and provided Lancaster with even more valuable information.

Formation of the company

In 1599, a group of prominent merchants and explorers met under a royal charter to discuss potential trade ventures in the East Indies. This group included Stephen Soame, the then Lord Mayor of London; Thomas Smith, an influential London politician and administrator; Richard Hakluyt, a writer and proponent of English colonization in the Americas; and several other mariners who had served with Drake and Raleigh.

On September 22, the group announced its intention to launch an expedition to the East Indies (seeking divine favor) and decided to invest £30,133 (equivalent to over £4,000,000 today) themselves. Two days later, the "Adventurers" reconvened and resolved to secure the Queen's support for the project. Although their initial attempt was not entirely successful, they sought the Queen's informal approval to proceed. They purchased ships for the venture and increased their investment to £68,373.

They met again a year later, on December 31, 1600, and this time they succeeded; the Queen responded favorably to the petition submitted by George, Earl of Cumberland, and 218 others. This group included James Lancaster, Sir John Hart, Sir John Spencer (both of whom had served as Lord Mayor of London), the adventurer Edward Michelborne, the nobleman William Cavendish, and various other aldermen and citizens. She granted their company a charter under the name 'Governor and Company of Merchants of London Trading into the East Indies.' This charter conferred upon the company a monopoly on English trade for fifteen years with all countries situated east of the Cape of Good Hope and west of the Straits of Magellan. Any merchant trading there without a license from the company faced the confiscation of their ships and goods (with the proceeds shared equally between the Crown and the company) and could also be imprisoned at the "royal pleasure."

Under the charter, Thomas Smith was appointed the company's first Governor[30]: 3  along with 24 directors (including James Lancaster)[30]: 4 —members of the "Committee"—who constituted the 'Court of Directors'. They reported to the 'Court of Proprietors', by whom they were appointed. Ten committees reported to the 'Court of Directors'. Initially, operations were conducted from the 'Nag's Head Inn' opposite St Botolph's Church in Bishopsgate, and were later moved to 'East India House' on Leadenhall Street.