They were all afraid of irritating people (who vote). Since people (who vote) decided their unavoidable future, they didn't want to take any strong stances on anything and just went with the flow and played the tune that the people wanted to hear. They needed to stay in power and not lose it for taking a serious stance.........
The root cause of the American Civil War is perhaps the most controversial topic in American history. Even before the war was over, scholars in the North and South began to analyze and interpret the reasons behind the bloodshed.
The scholars immediately disagreed over the causes of the war and disagreement persists today. Many maintain that the primary cause of the war was the Southern states’ desire to preserve the institution of slavery. Others minimize slavery and point to other factors, such as taxation or the principle of States' Rights.
In 2011, at the outset of the sesquicentennial, a Pew Research Center poll found that Americans were significantly divided on the issue, with 48% saying the war was "mainly about states' rights," 38% saying the war was "mainly about slavery," with the remainder answering "both equally" or "neither/don't know."
The anti-suffragism did. im not sure if this answers your question but i hope it helps!
B I think, slavery increased tons in the south because of Rice and other cash crops. The south was big on agriculture.
C would make sense because by not talking to other nations, there not a chance you would make war with one and another.