The legislative origins of the 73rd Constitutional Amendment Act can be traced back to which Constitutional Amendment Bill?

The 64th Constitutional Amendment Bill, introduced by Prime Minister Rajiv Gandhi in August 1989, was the first major legislative attempt to constitutionalize Panchayati Raj institutions. Although it was passed by the Lok Sabha, it failed to clear the Rajya Sabha due to opposition concerns. Years later, this bill served as the foundational draft for the successful passage of the 73rd Constitutional Amendment Act in 1992.