Final answer:
The first Thanksgiving feast in 1621 lasted for three days and was a harvest celebration involving both the Pilgrims and the Wampanoag tribe.
Step-by-step explanation:
The first Thanksgiving feast, which took place in September or October 1621, lasted for three days. This historical event was a celebration of the harvest and involved the Pilgrims and the Wampanoag tribe, including their chief Massasoit. The attendees feasted on a variety of foods including venison, fish, fowl, and beer. Notably absent from the feast were now-traditional foods like pumpkin pie and cranberry sauce. The Pilgrims had to hunt and gather their food, which meant on average spending two to three hours a day on these tasks. The significance of this celebration was not only the sharing of food but also the cooperation and unity between the two different cultures.