Question

The bicameral nature of the U.S. federal legislature is responsible for:

Answer 1

the division of Congress into a House and Senate (apex) :)

Answer 2

I believe the answer is: the division of Congress into a House and Senate

the bicameral nature in a country would divide its legislative body into two separate assemblies (in united states it becomes house and senate) . This system serve as a form of check and balances that limit the power of the legislative branch of the government.