Although many historians have different views of this answer. The main reason was probably dispute whether slavery should be legal
The Civil War was a war between the Confederate States of America and the Union. So, the Confederate states were important because they were one of the two warring countries.
It was between the Confederate States of America and the United States of America.
In the civil war between North and South, the Southern States in the US was confederate
Gettysburg was a battle in the American Civil War, fought between the United States and the Confederate States. The United States won, and the Confederate States ceased to exist.
Confederate States of America
The American Civil War was fought between the Union and the Confederate States of America. The Confederate states were the ones that seceded from the Union. The war was fought in the United States from 1861 to 1865.
The American Civil War took place between the Confederate States of America and the United States of America from 1861 and 1865.
Richmond was the capital of the Confederate States of America during the Civil War.
It was called the Civil War. It was brother against brother.
The US Civil War was fought between Union forces (Northern States) and Confederate forces (Southern States) from April 1861 to April 1865, ending in a Union victory and Confederate surrender.
Jefferson Davis served as President of the Confederate States throughout the Civil War.
The U.S. Civil War was between the Union and the Confederacy. The Union states were generally in the northeast and the Confederate states were generally in the southeast. The western states and the territories were basically neutral.