1. The Pilgrims set ground at Plymouth Rock on December 11, 1620.

2. The next year, Pilgrims landed at Plymouth Rock ( now Massachusetts ).

3. Europeans first set foot here around 1542,78 years before the Pilgrims landed at Plymouth Rock.

4. After the Pilgrims arrived in Massachusetts in late November, they settled down at Plymouth Rock.

5. Much has changed in the four centuries since these humble settlers landed at Plymouth Rock.

6. Thanksgiving is a celebration that commemorates the harvest reaped by the Plymouth colony in 1621, following their arrival at Plymouth Rock in 1620.