Because the North AND the South were drafted into the war.(The saying "a rich man's war and a poor man's fight"was also used because the South could not pay $300 to get out of the war like the Northerners could.)
The revolutionary war was considered a civil war with Britain, because most of the colonists were from Britain and still considered themselves Brits.
the weapons
Great Britain was the mother country, so it was considered a civil war because the Americans were fighting their own mother country. The civil war within that was between the loyalists and the patriots.
It was a Civil War only because the Americans were divided between Loyalist and Patriot. The American Revolution is not considered a civil war.
Gettysburg
The South called the Civil War "The War Between the States." A Civil War is fought within a country, and the Confederacy considered themselves an independent nation.
Before the Civil War Montgomery Alabama was considered the capital of the south. When Virginia entered the confederacy during the Civil War, the capital of the South was moved to Richmond Virginia.
It was considered the first civil war because it was a group of Americans fighting the Federal government.
Both the Mexican War and Bloody Kansas have been referred to as the Dress Rehearsal for the Civil War.
because it was north Vietnam against south Vietnam
The Battle of Gettysburg Is considered the turning point of the Civil War because the Confederates had previously won a considerable amount of battles, and after that, Union took control of the war.
Anytime a nation is fighting itself (normally WITHOUT outside help) it is generally considered a civil war. The US Civil War (1861-1865) was also called the US War of Rebellion. Which is why the Southerners in the US Civil War were called "Rebels."