Answer:
the constitution limits the power of government by making explicit grants of authority. The Checks and Balance system is an add-on to the idea of Separation of Powers. Checks and Balances allowed the separate branches to have some control over the other two. It was a way for each branch to be accountable to the others.
Step-by-step explanation:
The legislative branch makes laws, but the President in the executive branch can veto those laws with a Presidential Veto.
The legislative branch makes laws, but the judicial branch can declare those laws unconstitutional.