Can we have another flag for the "U.S History? I don't think that's the American flag :)
That IS a key "Historical" U.S. Flag! (although the number of stars & stripes is not correct due to the artist's limitations)
It is meant to depict the original flag of the independent colonies, with 13 stars and stripes for the original 13 colonies. Icons are often abbreviated in detail for clarity - it is the impression that is created of the flag more than the numerical accuracy of the parts.