What did the Mayflower passengers create when they wrote "civil body politick"?

2 answers

http://avalon.law.yale.edu/17th_century/mayflower.asp

http://www.history.com/topics/mayflower
The Mayflower Compact.
This Compact promised to create a “civil Body Politick” governed by elected officials and “just and equal laws.” It also swore allegiance to the English king