Which year is known for the return of the Pilgrims to America?

The year 1620 is significant because it marks the arrival of the Pilgrims at Plymouth Rock, thus known for the return of the Pilgrims to America. This event is pivotal in American history, as it represents the establishment of one of the first English colonies in the New World. The Pilgrims, seeking religious freedom, journeyed across the Atlantic Ocean aboard the Mayflower and ultimately settled in what would become Massachusetts. This year is also celebrated for the foundational aspects it contributed to American culture and society, including the tradition of Thanksgiving. All other years mentioned do not correspond to the Pilgrims' landing; 1616 and 1619 lack any significant Pilgrim activity or landing, while 1621 marks the first Thanksgiving celebration rather than their arrival.