I would go with issues that contributed to the civil war.
Racism and Women's rights were a huge controversy during the civil war and the 15th amendment gives every one the right to vote, no matter what race, gender, or past slavery.
Sorry about the late answer!
By contrast, populist authoritarian regimes "are mobilizational regimes in which a strong, charismatic, manipulative leader rules through a coalition involving key lower-class groups". Examples include Argentina under Perón, Egypt under Nasser and Venezuela under Chávez and Maduro
The main cause of the second industrial revolution was, natural resources, abundant labor supply, strong government policy and new sources of power.
I think it would probably be A. I looked it up and thats what it said
Commerce and Slave Trade Compromise is the answer
Hope That Helped!