It was the Southern states that 'formed separately' by breaking away as the Confederacy. The North was what was left. They didn't call themselves the North. They called themselves the Union.
The Confederate States of America.
11 southern states left the union and formed a separate government.
The Union victory meant that the southern states never actually left the Union, so they didn't need to be readmitted.
They formed the confederacy
It was the Southern states that 'formed separately' by breaking away as the Confederacy. The North was what was left. They didn't call themselves the North. They called themselves the Union.
The Conferate states
The Confederate States of America.
11 southern states left the union and formed a separate government.
The states that left the union.
none. all the states were in the union. the otheones left the union.
The Confederacy was the group of Southern slave-states that broke away and declared themselves to be a separate nation (not recognised by any foreign countries, except Mexico). The Union was what was left of the USA. (The North) After the war, the states were re-united.
The 7 states that left the union were the Confederate States of America, or the Confederacy. 4 additional states joined the first 7 to complete the Confederacy.
The four states that left the Union after President Lincoln's call for arms was South Carolina, Mississippi, Florida, and Alabama. Shortly after these states left the Union Georgia, Louisiana, and Texas succeeded.
border states are states that were left in the union but stil had slavery.
Confederation
ANSWER In January 1861, with exception of South Carolina which left the Union in December 1860