The Pilgrims celebrated Thanksgiving in 1621 as a way to give thanks to God for the successful harvest after their first difficult winter in the New World. They invited members of the Wampanoag tribe, who had been instrumental in helping them survive, to join them in the celebration. The Wampanoags brought venison and other food to share, and the two groups enjoyed a feast of turkey, fowl, fish, venison, corn, wheat, barley, peas, beans, squash, pumpkin, and fruits. They also engaged in games and other festivities. The event marked the beginning of a tradition that would become a cornerstone of American culture and a symbol of gratitude, unity, and cooperation between the Pilgrims and the Native Americans.