Because their landing was outside their patent area, there was dissent among the passengers as to whether or not they still needed to follow their signed agreements concerning their working within the colony. To combat this, the Pilgrims drew up a civil document which established the system by which they wished to govern themselves. This document has come to be known as the Mayflower Compact. It was signed in the cabin of the Mayflower by all 41 of the adult male passengers on the 21st of November, 1620. (November 11 Old Style).
Signing of the Mayflower Compact by Edward Percy Moran (1862-1935), showing Myles Standish, William Bradford, William Brewster and John Carver signing the Mayflower Compact in a cabin aboard the Mayflower while other Pilgrims look on. ca.1900.
The original hangs at the Pilgrim Hall Museum in Plymouth, MA. (from wikipedia.org)