The late Art Buchwald wrote the following column to explain Thanksgiving to the French while he was a correspondent in France and it became an instant Thanksgiving tradition:
One of our most important holidays is Thanksgiving Day, known in France as le Jour de Merci Donnant.
Le Jour de Merci Donnant was first started by a group of Pilgrims (Pélerins) who fled from l’Angleterre before the McCarran Act to found a colony in the New World (le Nouveau Monde) where they could shoot Indians (les Peaux-Rouges) and eat turkey (dinde) to their hearts’ content.
They landed at a place called Plymouth (now a famous voiture Américaine) in a wooden sailing ship called the Mayflower (or Fleur de Mai) in 1620. But while the Pélerins were killing the dindes, the Peaux-Rouges were killing the Pelerins, and there were several hard winters ahead for both of them. The only way the Peaux-Rouges helped the Pelerins was when they taught them to grow corn (mais). The reason they did this was because they liked corn with their Pélerins.
In 1623, after another harsh year, the Pélerins’ crops were so good that they decided to have a celebration and give thanks because more mais was raised by the Pélerins than Pélerins were killed by Peaux-Rouges.
The rest is here.