The historical background of the Indian Constitution can be traced back to various regulations and laws. Prior to 1947, India was divided into two main parts: 'British India' and 'Princely India'. The integration of these two entities led to the formation of the 'Indian Union'. The historical foundation and evolution of the Indian Constitution are linked to numerous regulations and laws of India.
The Constitution of India is the supreme law that defines the fundamental principles of the Republic of India, as well as the structure and functions of the government. It was drafted after India gained independence from the British in 1947 and came into effect on January 26, 1950—a day celebrated in India as 'Republic Day'. This Constitution established India as a democratic republic and a Union of States.
In 1942, the 'Cripps Mission' formally recognized the right of Indians to frame their own Constitution. After India gained independence, territories such as Puducherry and Goa were merged into the Indian Union. While the Constitution was being drafted, the administration of the new Indian Union was conducted in accordance with the laws enacted by the British Parliament that were then in force. Upon the coming into force of the Constitution of India, almost all existing laws—including the 'Indian Independence Act, 1947' and various 'Government of India Acts'—were repealed.
The draft of the Constitution was prepared by the Constituent Assembly; it was an elected legislative body that initially comprised 389 members, though this number dropped to 299 following the partition of India. The majority of these members belonged to the Congress Party; the Muslim League initially boycotted the assembly but later joined it. Groups such as the Sikh and Anglo-Indian communities were granted special representation. Rajendra Prasad was elected as the President of the Constituent Assembly (he later became the first President of India), while Harendra Kumar Mookerjee served as its Vice-President.
Bhimrao Ramji Ambedkar, the most prominent among the assembly's members, chaired the Drafting Committee. Legal expert Benegal Narsing Rau was appointed as the Constitutional Advisor and prepared the original draft of the document. There were 15 female members in the Constituent Assembly. Of these, 14 served their full term; however, freedom fighter Leela Roy from Bengal resigned from her position in protest against the partition of India. This partition divided her home state, resulting in the creation of West Bengal and East Pakistan.
It took the Constituent Assembly more than two years to draft the Constitution. In November 1948, the Drafting Committee, led by Ambedkar, presented the first draft of the Constitution to the Assembly. Every provision of the Constitution was discussed and debated, and amendments were made. This final document was influenced by the constitutions of several other countries; for instance, the parliamentary structure was adopted from the British Constitution, Fundamental Rights and the Preamble were drawn from the US Constitution, while the Directive Principles of State Policy were taken from the Irish Constitution.
'Schedules' are lists containing information regarding India's states, Union Territories, the salaries of government officials, and provisions related to Scheduled Tribes. They delineate the division of administrative responsibilities between the Central government and state governments. The 'Union List' comprises subjects on which only the Central government can enact laws; the 'State List' includes subjects over which state governments have the authority to legislate; and the 'Concurrent List' allows both the Central and state governments to make laws. These schedules also define the functions of Panchayati Raj institutions and municipalities.
The Indian Constitution begins with a summary of its core values. The original Preamble included only the terms 'Sovereign' and 'Democratic'; it was amended in 1976 to incorporate the words Socialist and Secular.



