Which is the best description of abraham lincoln's stance regarding slavery during the lincoln-douglas debates of 1858?
a) he believed that the expansion of slavery endangered the union.
b) he supported a constitutional amendment to ban slavery in all states and territories.
c) he believed that slavery should be prohibited in new territories entering the union, but should remain in place in the southern states.
d) he supported the idea of "popular sovereignty" and felt that it was the right of the citizens of a territory to permit or prohibit slavery.