<span>In an effort to preserve the balance of power in Congress between slave and free states, the Missouri Compromise was passed in 1820 admitting Missourias a slave state and Maine as a free state.</span>
Answer:
Plantation labor
four million enslaved people in the U.S. in 1860, nine out of ten lived on farms and plantations (mostly cotton plantations), and half lived in the Deep South.
Did you ever figure this question out?
I would have to say that the reason to not move to the US would be to send money home because you can do that also without having to immigrate to the US. That is my answer.
There is no letter that I see, therefor, I cannot answer this question