Answer:
Check and balances
Step-by-step explanation:
The system of check and balances was established to prevent each branch of government to have too much power.
The U.S. Constitution divides the governmental power into three branches: legislative, executive and judicial. It establishes various limits and restrictions on each branch.
The power of each branch can be checked by powers given to the two other branches.
The Supreme Court can declare laws unconstitutional, this process is called judicial review and is one example of the check and balances system.