Answer:
I believe it's "Checks and Balances"
Explanation:
"The Checks and Balances system provides each branch of government with individual powers to check the other branches and prevent any one branch from becoming too powerful" - Source:
https://www.law.cornell.edu/wex/separation_of_powers_0#:~:text=The%20Checks%20and%20Balances%20system%20provides%20each%20branch%20of%20government,branch%20from%20becoming%20too%20powerful.