This was a pretty much a vote on pro-slavery or anti-slavery.
The South was the center of slavery. More specifically, Alabama and Georgia were the main states where slavery was most popular.
Popular sovereignty. And by any chance, are you asking this because of a social studies map pack?
Popular sovernty was related to slavery because before the civil war Stephen Douglas said that the states should have popular sovernty and what he meant was the states have a right to choose if they wanted to be a slave state or not. This nullified the Missouri compromise which said any state above Missouri would be a free state.
In Mississippi & in North Carolina.
Our) peculiar institution
Settlers of some new territories were able to decide about slavery for themselves.
No, voluntary slavery is not legal in any country. Slavery is universally condemned and prohibited by international law.
drum.
Nearly free labor.
Study Island: Settlers of some new territories were able to decide about slavery for themselves.
The Emancipation Proclamation. It abolished any kind of slavery.