When the Civil War broke out in the United States, most countries in Europe and Latin America? used slave labor in their factories.

had laws against slavery.

relied on slaves to plant and pick their crops.

had never relied on slaves

They made a checks and balance system to equal power within the branches. the "check" meant that one branch would watch one branch and "balance" them if they were too powerful. if you want more info on this, i would just google checks and balance system.