Besides the pro-slavery people in the north, who else did the southerners believe would them to keep slavery in the south? a)the south thought that the u. s. government would give in and let the south keep slaves rather than go to war. b)the south believed that european governments that needed cotton for their economy would aid the south. c)the south believed that no one would them and they would have to find a way to keep slavery by themselves. d)the confederate states of america's government would propose a plan with the u. s. government to keep slavery in the south.