The document discusses the history of the first Thanksgiving celebrated by the Pilgrims and Wampanoag Native Americans in 1621. It notes that after surviving a difficult first winter in Plymouth, the Pilgrims and Wampanoag shared an autumn harvest feast. Today, Thanksgiving is celebrated on the fourth Thursday of November as a national holiday to give thanks with family, food, football, and parades like the Macy's Thanksgiving Day Parade in New York City.