Question

how did Panchayat Raj come to be setup on a uniform pattern all over the country

Answer 1

The 73rd amendment in 1992 made it compulsory to hold panchayat elections regularly and establishment of this Panchayati Raj.

The Amendment of 1992 added a new Part IX to the constitution titled “The Panchayats” 

Answer 2

Th 73rd amendment in 1992 made it compulsory to hold panchayat elections regularly and establishment of this Panchayati Raj.
The Amendment of 1992 added a new Part IX to the constitution titled “The Panchayats”