Constitution of India

The Constitution of India is the Supreme Law of India.
 It lays down the framework defining fundamental political
 principles, establishes the structure, procedures, powers,

 and duties of government institutions, and sets out fundamental
rights, directive principles, and the duties of citizens.
 It is the longest written constitution of any sovereign
 country in the world, containing 448 articles in 22 parts,
 12 schedules and 118 amendments. Besides the English version,
 there is an official Hindi translation. Dr B.R. Ambedkar
 is widely regarded as the father of the Indian Constitution.

The Constitution was enacted by the Constituent Assembly
on 26 November 1949, and came into effect on 26 January
 1950. The date 26 January was chosen to commemorate the
 Purna Swaraj declaration of independence of 1930. With its
adoption, the Union of India officially became the modern and
 contemporary Republic of India and it replaced the
 Government of India Act 1935 as the country's
 fundamental governing document. The Constitution declares
India to be a sovereign, socialist, secular, democratic republic,
 assuring its citizens of justice, equality, and liberty,
and endeavours to promote fraternity among them.
 The words "socialist" and "secular" were added to
 the definition in 1976 by constitutional amendment.
 India celebrates the adoption of the constitution on
26 January each year as Republic Day.