What is the purpose of checks and balances in the Constitution?

They would keep any one branch from having too much power.
They would give the president power over matters related to money.
They would allow states to have equal power with the federal government.
They would give Federalists and Anti-Federalists equal power.

They would keep any one branch from having too much power.

Explanation:

The system of checks and balances is the main control principle in the regime of separation of powers. Through this, each of the state powers carries out functions and tasks that in turn limit the powers of the rest, which at the same time set limits to others in the same way. In this way, each of the state powers (executive, legislative and judicial) controls that the other powers do not exceed their functions. Thus, for example, Congress must approve several appointments made by the President, who in turn can veto laws passed by Congress.

b) the confederacy had to pay all union war expenses.