solved I’m working on a history discussion question and need a

I’m working on a history discussion question and need a reference to help me study.

The events leading to the Civil War caused chaos in the emerging U.S. political parties as the second party system gave way to new, sometimes temporary parties.
To complete your discussion assignment, please do the following:

Consider how slavery and sectionalism affected U. S. politics. Write two paragraphs that addresses the following:

Based on the different parties that emerged from 1846 through 1861, what do you think were the three most prominent events that affected U. S. politics?
Why does each of the events you’ve chosen seem prominent to you? Support your response with evidence from the text or other sources found in MindTap’s Resource Center. Cite any sources you use.