A national <a href="https://en.wikipedia.org/wiki/Thanksgiving_(United_States)" id="mwMQ" rel="mw:WikiLink" title="Thanksgiving (United States)">Thanksgiving Day</a> is observed in the United States as proclaimed by President <a href="https://en.wikipedia.org/wiki/George_Washington" id="mwMg" rel="mw:WikiLink" title="George Washington">George Washington</a> at the request of <a href="https://en.wikipedia.org/wiki/United_States_Congress" id="mwMw" rel="mw:WikiLink" title="United States Congress">Congress</a>.