Answer:
Battle of Vicksburg
Step-by-step explanation:
The American Revolutionary War was a war of independence of the United States of America that was fought between the 19th of April, 1775 and 3rd of September, 1783. The war started when the delegates from the thirteen (13) American colonies in Congress (First continental congress) revolted against the Great Britain over their lack of representation in the colonies and refusal to give consent to parliament's taxation such as Stamp Act and Townshend Acts.
The Battle of Vicksburg was the last major military action and decisive battle of the Vicksburg Campaign (Western theater of the Civil War). This final battle of the long series of battle started on the 18th of May, 1863 and was lead by Union General, Ulysses S. Grant. It was formally ended on the 4th of July, 1863.
Vicksburg is the city that was founded after the battle gave the Union complete control over the Mississippi River and its tributaries.
Hence, the Battle of Vicksburg was the battle that cut the confederacy in two.