Nation The real roots of Thanksgiving: Rethinking what happened 400 years ago at the first feast in Plymouth November 28, 2019Joey Garrison, USA TODAYComments Off on The real roots of Thanksgiving: Rethinking what happened 400 years ago at the first feast in Plymouth Native people likely outnumbered English colonists at the 1621 harvest feast, where there would have been fowl and fruit, but no green bean casserole.