Alabama
Yes, California entered the Union prior to the Civil War.
mississippi
West Virginia
Democrat, Whig, and Republican.
West Virginia
West Virginia
West Virginia
South Carolina
The state of South Carolina was the first state to leave the United States prior to the Civil War. They started the Confederacy.
West Virginia and Nevada both entered the US during the Civil War.
All the states that formed the original confederacy seceded before the civil war, 11 in total: South Carolina Mississippi Alabama Florida Texas Arkansas Georgia North Carolina Tennessee Virginia Louisiana