The correct answer is the Canadian Rebellion
It was an event in 1837 in which the Lower and Upper Canada had a series of rebellions against Britain because of the way they were treated as colonies. This brought them on the Brink of war with the United States for various reasons, mostly about Britain controlling areas on the New World and the fact that Canada didn't look the same as it does today.
Missouri Compromise
The Missouri Compromise split the Louisiana Territory with the North being free from slavery and the South being allowed to have slavery.
The issue of slavery was a rising concern and with each state entering into the Union the balance of slave and free states was skewing. With a new land mass to be concerned with, the government needed a compromise to deal with new states coming into the Union in an effort to maintain slave v. free states. Missouri was entered as a slave state and Maine entered as a free state. The compromise also set the 36'30 line splitting Louisiana Territory. The compromise would last until 1850.
