In what ways did the issue of slavery make westward expansion more complicated? A.
Southerners continued to hold most of the power in the House of Representatives, which allowed them to make laws expanding slavery to the west.
B.
The federal government was unable to effectively regulate the slave trade in the west due to the popularity of the institution in Mexico.
C.
Most of the new territories were located in the North, giving that region an advantage in determining whether or not slavery would be allowed.
D.
Slave and free states would continue to struggle over the balance of power in the Senate.