To what extent did borders change after the end of .........

Question

The US Civil War. What States were forfeited by the South to the North and was Slavery finally abolished?

Answer 1

No borders were changed by the Civil War, unless you count the division of Virginia and West Virginia prior to cesesion.  The aim of the war was to preserve the Union, and although it ended slavery, it restored the states to their prior positions, although their voting rights were only gradually reintroduced.

Answer 2

West Virginia was formed in 1863 from the northwestern counties of Virginia that had seceded from Virginia after Virginia seceded from the Union.

The term border states refers to the five slave states of Delaware, Kentucky, Maryland, Missouri, and West Virginia which bordered a free state and were aligned with the Union. All but Delaware share borders with states that joined the Confederacy.

In addition, two territories not yet states – the Indian Territory (now the state of Oklahoma) and the New Mexico Territory (now the states of Arizona and New Mexico) – also permitted slavery.

Oklahoma was admitted to the Union on Saturday November 16 1907,

New Mexico on Saturday January 6 1912 and Arizona on Wednesday February 14 1912 as the 46th 47th and 49th states respectively.