Since independence in 1947, the Indian polity has undergone significant changes. Some of the major events and constitutional amendments that impacted the evolution of Indian polity are:

• Adoption of the Constitution in 1950, which established India as a federal, democratic republic.
• The first general elections in 1951-52, which established India as a parliamentary democracy with universal suffrage.
• The 42nd Amendment to the Constitution in 1976, which made several changes to the Constitution, including adding the words 'Socialist' and 'Secular' to the preamble.
• The Emergency period between 1975-77, where civil liberties were suspended and the Constitution was altered, leading to widespread protests and the eventual restoration of democracy.
• The Mandal Commission recommendations in 1990, which introduced quotas for socially and economically disadvantaged groups in government jobs and educational institutions.
• The 73rd and 74th Amendments to the Constitution in 1992, which provided for the establishment of Panchayati Raj institutions and urban local bodies, respectively.
• The liberalization of the Indian economy in 1991, which led to a shift towards market-oriented economic policies.
• The rise of regional political parties and their increased influence on national politics.

These events have helped shape the Indian polity into what it is today, a diverse and complex democracy that continues to face various challenges.