The document provides background information on the origins of Thanksgiving traditions in the United States. It explains that the first Thanksgiving was a three-day harvest feast in 1621 shared between the Plymouth colonists and Wampanoag Indians. Turkey was not served at this initial celebration. The summary also notes that Pilgrims did not use forks during the first Thanksgiving since forks had not yet been invented. Additional details are given about the location of the first Thanksgiving in Plimoth, Massachusetts and the hardships faced by the Pilgrims during their first winter in America.