Answer:
Thanksgiving is a harvest festival celebrated in the United States on the fourth Thursday of November.
American tradition associates the holiday with a festival that is said to have been celebrated by the Pilgrim Fathers in 1621 when they founded a settlement in Plymouth, Massachusetts: after the harsh Mayflower journey from Europe, the harvest failed. When, thanks to the help of Indians of the Wampanoag tribe and after an Indian summer, harvesting was still possible in November, the first celebration of Thanksgiving followed.
