Use the words sovereign and secede in a sentence about the Southern states.

Seven southern states seceded and formed a sovereign state.

Explanation:

Seven southern states seceded from the union because they want slavery in their states but the union opposed the slavery so they seceded from the union and made their sovereign state. This seceded of the southern states led the country towards civil war. Huge losses occur to both sides but the union get the victory in the end and all seven southern states were united.