Which war was primarily fought between the North and South in the United States?

The Civil War was primarily fought between the Northern states, known as the Union, and the Southern states, referred to as the Confederacy, from 1861 to 1865. This conflict arose mainly due to deep-seated issues such as slavery, states' rights, and economic differences. The Civil War is significant because it led to the end of slavery in the United States and a reaffirmation of the nation's commitment to a unified government.

In contrast, the other wars mentioned, such as World War II, focused on global conflict involving multiple countries, with battles primarily taking place in Europe and Asia rather than internal divisions within the U.S. The American Revolution was a struggle for independence from British rule, and the War of 1812 involved conflicts between the United States and Great Britain. Each of these conflicts has a distinct historical context that is separate from the internal strife represented by the Civil War.