This document lists 10 historically significant US political documents in chronological order: the Mayflower Compact of 1620, the Declaration of Independence of 1776, the Constitution of the United States of 1787, the Louisiana Purchase of 1803, the Monroe Doctrine of 1823, the 13th Amendment abolishing slavery of 1865, the Zimmerman Telegram of 1917, the 19th Amendment giving women the right to vote of 1920, the Immigration Act of 1924, and the Truman Doctrine of 1947.