For three weeks, the groups battled. Cannonfire was exchanged and the sounds of gunshots became average during that time.
On October 19, 1781, a cry of victory was heard from the Franco-American Troops. General Cornwallis of the British military had surrendered to the rebels.
This battle was the most important in the Revolutionary War, as it ended all of the conflicts and gave the colonists their freedom. To show acceptance of defeat, a sword was given to the British by the second-in-command officer, as Cornwallis claimed he was "too ill to attend."
After the war, peace negotiations were made in 1782, and then The Treaty of Paris (a document that formally gave the colonies their freedom) was drafted and signed by both parties.
The siege of Yorktown was a major battle in the Civil War. The colonists joined forces with the French troops to battle their oppressors: The British. They succeeded after weeks in battle, and finally got their well deserved victory.