Myth #1: “The First Thanksgiving” occurred in 1621.
Fact: No one knows when the “first” thanksgiving occurred. People have been giving thanks for as long as people have existed
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And that, folks, is a learned individual talking.
Don't have to read much more except for the humor value.
The settlers in Jamestowne held a Thanksgiving feast a lot earlier than 1621! They just didn’t have as good a PR firm as the folks who later came to Pli-mouth Colony.