Answer:
The Lousiana Purchase
Explanation:
They were able to expand westward when Thomas Jefferson purchased Louisiana. This became of bad effect because the Missouri Compromise didn't involve the westward expansion. The Missouri Compromise was writing that tried to outlaw slavery, but sense it didnt evolve around Louisiana, the people there could continue with slavery. This was why expanding had bad effects.
American needed more people to work
Ellis island was where thousands of immigrants were processed before being allowed into the United States.
Answer:
A slave
Explanation:
Slaves would do all the work for people. They'd take care of everything so I'm not saying A is right, but that is the answer I would go with. Unless I knew other wise.