Slavery was added to the Articles and Constitution because South Carolina's support was deemed as critical to the rebellion against Britain. The other colonies

Slavery was added to the Articles and Constitution because South Carolina's support was deemed as critical to the rebellion against Britain. The other colonies begrudgingly added this, opting for changes to the wording of the clause to enshrine slavery into the constitution, and did everything they could to violate their constitution until South Carolina wrote them back saying it is best if South Carolina exited.