Final answer:
George Washington's original plan was to attack the British army base in New York with the help of French troops, but he later changed his plan to attack the base in Yorktown.
Step-by-step explanation:
Before the Battle of Yorktown, George Washington's original plan was to attack the British army base in New York with the help of French troops. French troops were planned to move south to support Washington's attack. However, due to circumstances, Washington changed his plan and decided to attack the British army base in Yorktown, Virginia instead.
Learn more about George Washington's plan before the Battle of Yorktown