Which year did the Continental Congress adopt the American Flag?

The American Flag was officially adopted by the Continental Congress on June 14, 1777. This decision established the flag's design as having 13 stripes representing the original 13 colonies and a field of stars, which would eventually represent the states as the nation grew. The adoption of the flag was a significant step in unifying the colonies under one symbol of independence and identity, especially during the Revolutionary War. The date of June 14 is now celebrated annually in the United States as Flag Day, recognizing the importance and history of the flag. This makes 1777 the correct answer, as it was the year the design was formally recognized and set as the national standard.