May 2nd: Edvard Munch’s “The Scream” Sets Auction Record

May 1st: The “Mission Accomplished” Speech and the Invasion of Iraq

April 30th: The United States Purchased The Louisiana Territory from France

April 29th: The Liberation of Dachau Concentration Camp

April 28th: U.S. President Richard Nixon Formally Authorizes American Combat Troops to Take Part in The Cambodian Campaign

April 27th: President Abraham Lincoln’s Suspension of The Writ of Habeas Corpus Between Washington, D.C., and Philadelphia

April 25th: Founding Negotiations for The United Nations Begin in San Francisco

April 24th: the Antiterrorism and Effective Death Penalty Act of 1996 is Signed

April 23rd: The First Public School in The United States, Boston Latin School, Is Founded in Boston

April 21st: The Seattle World’s Fair (Century 21 Exposition) Opens