The USA flag has 50 stars. The old USA flag had 13 stars. So that's a difference of 37
48 Stars There were 48 stars from 1912 until 1959. This can be found under the history of our flag.
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During the term of Franklin Delano Roosevelt from 1933-1945, the US flag displayed 48 stars; the flag with 48 stars was the official flag from 1912-1959.
The US flag had 48 stars when Woodrow Wilson left office