What decision did the South want the states to make, and not the federal government?
dont plagiarize it pls!!

The only one I can really think of is again slavery

Explanation:

Like I initially stated they didn't want the Federal government to have the power to prohibit slavery. It initially was in the declaration of independence that slavery should be abolished but since many of the Southern states threatened not to sign the declaration, the framers decided to remove the paragraph about slavery. They decided they would later deal with this issue.