Ultimately, what led to the colonies' victory in the american revolution? a. an alliance with spain. b. washington's ability to keep an army together. c. the french invasion of england. d. the french blockade of philadelphia. e. george washington's major assaults on new york city.

B. Washington's ability to keep an army together.

The colonies' victory in the American Revolution was led by Washington's ability to keep the army together. while it's true that the alliance with France gave a fundamental support to the American cause, the end of the war and the success of the American Revolution could be set with the Yorktown Battle of 1781.

Ibelieve the answer is answer 5