The Constitution of India is a comprehensive document that draws upon the experiences and constitutional practices of several countries. While framing the Constitution, the Constituent Assembly studied various foreign constitutions and adopted suitable provisions to meet the social, political, and administrative needs of India. These provisions were not copied in their entirety; rather, they were adapted and modified to suit Indian conditions. As a result, the Indian Constitution incorporates several distinctive features derived from both written and unwritten constitutional traditions around the world.

Source

Provision

British Constitution

Parliamentary Government, Rule of Law, legislative procedure, single citizenship, cabinet system, prerogative rights, parliamentary privileges and bicameralism.

United States Constitution

Fundamental Rights, independence of judiciary, judicial review, impeachment of the President, removal of Supreme Court and High Court judges and post of Vice-President.

Irish Constitution

Directive Principles of State Policy, nomination of members to Rajya Sabha and method of election of President.

Canadian Constitution

Federation with strong centre, vesting of residuary power in the centre, appointment of state Governors by the Centre, the advisory jurisdiction of the Supreme Court.

Australian Constitution

Concurrent list, freedom of trade, commerce and intercourse, and joint sitting of the two Houses of Parliament.

Weimar Constitution of Germany

Suspension of fundamental rights during emergency, soviet constitution (USSR, now Russia), fundamental duties and the ideal of justice (social, economic, and political) in the Preamble.

French Constitution

Republic and the ideals of liberty, equality, and fraternity in the Preamble.

South African Constitution

Constitution procedure for amendment of the Constitution and election of members of Rajya Sabha.

Japanese Constitution

Procedure established by Law.