(In November of 1621) when the Wampanoags helped the Pilgrims (who had arrived on the Mayflower, in 1620) bring in their first crop in the new world, there was a great feast during that harvest time. According to the Pilgrims, about 90 Wampanoags crashed the party and brought with them all sorts of delicacies. The Wampanoags usually celebrated their harvests, with food and rejoicing. They brought venison (deer meat), wild turkey, rabbit, woodchuck, lobster, clams, mussels, potatoes, sea bass, bluefish and many other delicious foods. Wampanogas also brought corn, beans, and squash to the feast, and even showed the Pilgrims how to cook the food. The Pilgrims were very appreciative of the gifts, and the 90 Wampanoags who crashed the party had a wonderful time (extracted from http://content.scholastic.com/browse/article.jsp?id=7587).
Thanksgiving is celebrated in the US on the 4th Thursday of November every year. Happy Thanksgiving !!