Montesquieu outlined a system of checks and balances that would prevent one branch of government from dominating the others. Which would be an example of checks and balances between branches? Congress and the president must declare war jointly.
The president can make executive agreements.
The Supreme Court determines the constitutionality of laws passed by Congress.
The president is the commander-in-chief of the armed forces.

it provided for selection of government employees through competitive examinations. it also made it unlawful to fire or demote covered employees for political reasons or to require them to give political service or payment, and it set up a civil service commission to enforce the law.

explanation:

sharecropper (you may punch em in the face if im wrong lol)

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the american civil war was not caused   by slavery but by economic factors.