Please help I don’t understand any of these questions.

The system of checks and balances was designed for what purpose? fear of strong state power to keep power out of one branch to appease the southern states to allow the judicial branch to have equal power

Hitler hoped the threat of would deter the u.s. from entering the war. a. japanb. genocide c. nuclear war d. war on two fronts

Who was the first present of the united states