Constitutional Convention: This was a meeting held in 1787 where delegates from various states gathered to discuss and create the framework of the United States government.
Secession: Secession means withdrawing or breaking away from a larger group or organization. In this context, it would refer to Southern states leaving or seceding from the Union.
Compromise: A compromise is an agreement reached by both sides in which each side gives up something in order to achieve a mutually acceptable solution. At the Constitutional Convention, compromises were made between Northern and Southern delegates on issues such as representation and slavery.