<human>:  What is the history behind the flag of the United States?
<bot>: 
1. The flag of the United States has evolved over time to become the American flag we recognize today.
2. The first official US flag, commonly known as the Stars and Stripes, was adopted by the Second Continental Congress on June 14, 1777, after the fledgling nation declared its freedom from Britain.
3. Over the years, more stars were added to the flag, to represent the addition of new states.
4. On July 4th, 1960, the 50th star was added for the admission of Hawaii, and the current version of the United States flag has a total of 50 stars and 13 stripes to represent the 50 states.