Conversation so far:
what was the final battle of the civil war
The Battle of Palmito Ranch is considered by some criteria as the final battle of the American Civil War.
how many battles were there in the civil war
The Civil War consisted of nearly 10,500 battles
what started the civil war
The Civi War began when the Confederates bombarded Union soldiers at Fort Sumter, South Carolina on April 12, 1861
how many casualties were there in the civil war
Roughly 620,000 American soldiers died in the Civil War

Question: how long did the war last
Self-contained rewrite: how long did the civil war last