Established self-government at Plymouth is to Mayflower Compact, as first form of government in U. S. is to

The Mayflower Compact was important because it was the first document to establish self-government in the New World. It remained active until 1691 when Plymouth Colony became part of Massachusetts

a big wall across the mexican border so no drugs, terrorist, or illegal immigrants can come through : )    

the answer to your question is

the treaty of hopewell