The first was held in 1621 and celebrated a. the end of the pequot war. b. the establishment of the first english colony. c. the return of squanto from europe. d. the ties between colonists and american indians.

d. the ties between colonists and American Indians.

Explanation:

During the first few years of the Plymouth colony, the pilgrims faced a lot of hardship. Farming in a new land was difficult, and the winters were very harsh. However, after a few years, the food supply had grown considerably. In the autumn of 1621, the Pilgrims had enough supplies to celebrate, and they expressed their gratitude through a feast that resembled the English tradition of Harvest Festival. Many Native Americans who had helped the colony survive joined. The tradition was repeated each year.

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the first forms of writing came from them in the form of pictographs around 3100 bc.