Sounds like South Sudan.
South Carolina, North Carolina, Virginia, Georgia, Alabama, Mississippi, Arkansas, Tennessee, Texas, Florida, Louisiana.
They seceded from the nation.
The states of the upper South, such as Virginia and Tennessee seceded from the United States in 1861.
The South seceded from the United States.
South Carolina seceded from the Union before the Civil War.
By whom? The South called them The Confederate States of America - officially a separate nation, in their eyes. The North did not recognise the Confederacy, and simply called them The Rebel States.
South Carolina
Only one state seceded in 1860, South Carolina.
Confederate States of America
The states are: Florida, Texas, Louisiana, South Carolina, Mississippi, Alabama, Georgia, Virginia, Arkansas and Tennessee.
It was first joined by states in the Deep South.