18th Century Documents: The Northwest Ordinance (July 13, 1787) The Proclamation of Neutrality (April 22, 1793) The Fugitive Slave Law of 1793 The Treaty of Greenville (1795) The Sedition Act (July 14, 1798)
19th Century Documents: The Monroe Doctrine (December 2, 1823) Declaration of Causes of Seceding States (1861) The Constitution of the Confederate States of America (1861) McClellan's Letter to Abraham Lincoln (July 7, 1862)
20th Century Documents: The Espionage Act of 1917 The Sedition Act of 1918 The Neutrality Act of 1937 The Neutrality Act of 1939 The Atlantic Charter (August 14, 1941) The Truman Doctrine (March 12, 1947) The North Atlantic Treaty (April 4, 1949)
