Why does the constitution establish a bicameral legislature

The bicameral legislature was established as a way to avoid that the legislative branch had a lot of power.

Explanation:

The bicameral system in the United States is composed of two organisms, the House of Representatives and the Senate.

The bicameral system was created because when America's founders were in the Constitutional Convention they had some disagreements related to what should be the number of representatives in each state. Thus, the founders had the idea of creating the Great Compromise, which was an agreement related to this problem.

The bicameral system was created with the idea of having checks as well as balances and at the same time avoid any kind of abuse of power by a specific organism.