The western counties of Virginia broke away, and formed West Virginia.
It did not support the Confederate States of America.
Yes. It happened in 1863 when the western counties of Virginia broke away from Virginia proper to form the new state of West Virginia.
It was not one of the first states to secede, and many prominent Virginians, including Robert E. Lee, were hoping it wouldn't. The Western counties disapproved of secession so much that they broke away and formed their own state of West Virginia, offering themselves to the Union.
In the American Civil War, because the Western counties of Virginia did not approve of the Virginia breaking away from the USA. So they broke away from the CSA, and gave Lincoln a welcome gift of a new state of the Union.
They broke away from his union of states.
No, that was South Carolina. West Virginia was a new state formed from the Western counties of Virginia, which had voted solidly against secession, and broke away from Virginia to join the USA in 1863.
The Confederate States of America (or The Confederacy).
The Southern (Confederate) States - the ones that broke away from the USA.
West Virginia - it was a new state, formed out of the Western counties of Virginia, that broke away from the Confederacy and offered itself to the Union. Missouri could also be described as fighting for both sides, as there was so much inter-sectional violence there throughout the war. Kentucky too - a provisional Confederate government was briefly installed there, but very few Kentuckians volunteered to join the Confederates.
Most residents of the western counties of the Commonwealth of Virginia did not want to seceed from the Union. After the Civil War began, those counties broke away from Virginia and were admitted to the Union as the state of West Virginia. Nevada also owes its creation to that bloody conflict and it boasts this fact in the state flag, It was created out of Utah and became the 36th US State on 31 October 1864.
Do you mean the five slave-states that stayed in the Union? There were origially four - Missouri, Kentucky, Maryland and Delaware. A fifth was the newly-created state of West Virginia, which broke away from the Confederate state of Virginia in 1863.