Question

why has federal system has been adopted in our country​

Answer 1

It is because of independent of judiciary that “basic structure of constitution” theory has been adopted which somehow limits the powers of parliament from being amended the basic fundamental structure of constitution

Answer 2

Answer:

The first reason was federalism has key essential features such as division of power, written constitution, supremacy of the constitution, independent judiciary and so on. ... The final structure any/every law has to be in accordance and compliance to the Constitution