What flag did the United States fight under during the Revolution?

The correct answer is the Betsy Ross Flag. The Betsy Ross Flag is often associated with the early years of the United States and symbolizes the beginning of the American Revolution, featuring 13 stripes representing the original colonies and a field of stars representing the union of these colonies. While it is a common belief that this flag was created by Betsy Ross for George Washington, historical details about its use during the Revolution are somewhat unclear, but it embodies the spirit of that era.

The other flags mentioned had their significance during the Revolution but were not as directly linked to the fight for independence. The Grand Union Flag, for example, was the first national flag of the United States, used before the adoption of the final design. It consisted of the Union Jack and 13 stripes, symbolizing the colonies' ties to Britain at the start of the conflict. The Stars and Stripes, which is recognized today as the national flag, was officially adopted much later after the Revolution concluded. The Fort Henry Flag, while historically important, is not directly linked to the Revolutionary War in the same way that the Betsy Ross Flag is.