Border States
There were 34 States in the Union when the Civil War began.
No, it was just 'The Union' - the term for the states that had stayed loyal during the Civil War.
The Condedrerates, the ones who secced for the United States and the Union, the states that stayed loyal to the United States. The confederates were in the south and the union was in the north.
The war was between the US states that withdrew(seceded) from the federal union of the United States and those who stayed in the union.
After a short time they joined the Union side and fought against the Confederacy. However a part of their citizen, especially those of Missouri and Kentucky, enlisted themselves voluntarily in the Confederate Army.
During the Civil War, the United States was divided into the Union and the Confederacy. Twenty states belonged to the Union, and there were also four border states that did not secede from the United States, but also did not give up slavery. The Confederacy had eleven states.
It was the border states that didn't secede (or leave) to the Confederate United States of America. For example Tennessese didn't secede but decided to run to governments at the same time, one Union Government and one Confederate Government. Kentucky did the Same thing
The five slave states that did not secede from the U.S. were called "border states." These states are West Virginia, Missouri, Kentucky, Maryland and Delaware.
The union capital stayed in Washington, DC.
Missouri, Kentucky, Maryland, and Delaware. West Virginia was also formed during this time period and remained loyal to the Union. Slaves in these states were not freed till after the civil war; not even by the Emancipation Proclamation.
Just after the election of Lincoln the southern states began to talk about leaving the Union. In April of 1861 South Carolina left the Union and Confederate forces attacked Ft. Sumter in Charleston's harbor. This began the civil war.