Controversial political theory in American history gave federal territory residents the power to choose whether their areas would become slave and free states when they joined the Union

Missouri applied for admission as a slave state, which would have upset the balance of free and slave states in the Senate. It would encourage slaves to migrate from the south, thus increasing the demand slaves.

This benefited the both because they equally got a state but, the compromise also encouraged slavery to spread.

It marked the first U.S armed conflict chiefly fought on foreign soil. Mexico had lost about one-third of its territory, including nearly all of present-day California, Utah, Nevada, Arizona, and New Mexico.

This benefited both the whole nation gained land and could split it but not equally.

While the South continued to labor on plantations, sectionalism grew in the North as factories were constructed.

The North benefited from this because they didn’t have to break with the tax from buying out of the country.

The western

Brought up the idea that slavery could potentially be in places that it was once banned.

This benefited the South because they relied on slavery.

Declared the Missouri Compromise unconstitutional, kept slavery in the United States, and didn’t allow African American citizenship.

The south benefited from this because the south was all for slavery.

Planned on starting a slave revolt in southern states. He believed that arming the slaves would inspire a rebellion again slavery. Brown wanted to seize weapons from the U.S. arsenal at Harpers Ferry.

The North would benefit because they didn’t like slavery.

Abraham won the presidential election in four contest.

The North benefited from this because Lincoln was against slavery just like the north.