What came to Plymouth Massachusetts on a ship called the mayflower in 1620?

Pilgrims! They were from the U.K., and they came over here on the mayflower. They came because they were sick of not having any freedom in the U.K. They didn't even get to choose their religion, King George chose everybody's religion, which was always what religion he believed in. So, a group of them came over on some ships (the main was the Mayflower) to gain new freedom. Then they ran into the united states...