Answer:
I'm just going in order
1. separation of powers
2. federalism
3. checks and balances
Explanation:
Separation of powers is when power is divided into branches. For example, the US having three branches of federal government.
Federalism is when the federal government has some power, but subnational units also have some power. For example, the US has a federal government in Washington, DC, state governments such as the state of Florida, and local governments such as the city of Miami.
Finally, checks and balances are when the branches of government can "check" one another. For example, a president vetoing a bill from Congress would be a "check" from the executive branch to the legislative branch. This way, every branch has roughly equal power.
Hope this helps!
