I'll make you brrainliest

Why do we have a bicameral legislative branch?

The bicameral system is supposed to provide for checks and balances and prevent potential abuses of power. The U. S. bicameral system arose from a desire to have a balanced system within the legislative branch and to address a disagreement over how states would be allocated representation.

The reason to have a bicameral legislative branch is to prevent abuses of power, provide checks and balances. While also dividing Congress into two chambers, with positive vote of both required to approve legislation is meant to prevent tyranny.