Why did the slavery issue become linked with Manifest Destiny and western expansion?
A Admitting new states could upset the balance in Congress between free states and slave states.
B Most people in the western territories thought that slavery was morally wrong and refused to allow it.
C Enslaved people who escaped often fled to the West, where they were protected by territorial laws.
D Southern leaders worried that most new states would be free states because the climate and terrain in the West was not suited for plantation agriculture