The Mayflower Compact was an iconic document in the history of America, written and signed aboard the Mayflower on November 11, 1620 while anchored in Provincetown Harbor in Massachusetts. The Compact was originally drafted as an instrument to maintain unity and discipline in Plymouth Colony, but it has become one of the most historic documents in American history. It was published in London in Mourt's Relation in 1622, and the authors had added a preamble to clarify its meaning: "it was thought good there should be an association and agreement, that we should combine together in one body, and to submit to such government and governors as we should by common consent agree to make and choose."