What was the unstated goal of the wilmot proviso

D)The Proviso would eventually tip the balance of slave versus free states in Congress

the answer here would be

in which two ways were the northeast woodland indians and the southeast indians similar? both collaborated to form the iroquois confederacy. both cultivated the crops of corn, beans, and squash. both lived in rich environments of swamps and rivers. both lived in tree-bark dwellings called wigwams. both expected men to hunt, while women farmed.