Answer:
C, they wanted to expand their trading empire
In Dred Scott v. Sandford (argued 1856 -- decided 1857), the Supreme Court ruled that Americans of African descent, whether free or slave, were not American citizens and could not sue in federal court. The Court also ruled that Congress lacked power to ban slavery in the U.S. territories.
B, a house divided against itself cannot stand
Jericho was the oldest city in the Palestine that had bloodshed wars of the history , but was captured by the Israelites upon entering the land of Canaan however, the city was enslaved for 18 years.