The Constitution of India, adopted on November 26, 1949, and enacted on January 26, 1950, serves as the supreme law of the nation, outlining the framework for government, fundamental rights, and duties of citizens. With 448 articles, it is the longest written constitution globally and embodies principles of democracy, secularism, and welfare, reflecting India's struggle against colonial rule. Key features include its amendable structure, the establishment of a parliamentary democracy, and provisions for emergency governance.