The creators of the roman republic work to ensure that no leader became too powerful so that everyone in the empire got to have a say on what they want to happen. For them, a too powerful leader would have all the say and not let anyone else contribute.
Explanation:
Congress passed the Reconstruction Act of 1867, dividing the Southern states into five military districts.
Public works administration
I think the check and balances system work really well in united states.
This system prevent the government from becoming too tyrannical because it separate our government into legislative, executive, and judiciary branch.
If, one government handles all these three, the government could basically violate the law and directly change the law after that so it wouldn't be considered a crime