"Indian Sambhidhan" refers to the Constitution of India, which is the supreme law of the country. It was adopted by the Indian Constituent Assembly on November 26, 1949 and came into effect on January 26, 1950. The Constitution defines the fundamental po litical 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 in the world and is often regarded as the cornerstone of India's democracy.