President James Monroe addresses Congress During his annual message to Congress in late 1823, President James Monroe included a warning to European powers that they should not interfere in affairs in the Americas. According to The Gilder Lehrman Institute of American History, the powers that be in the United States were wary of European intervention in Florida, the Pacific Northwest and Latin

Sinking of the Lusitania Though the Lusitania was a British-owned ship, the U.S. Library of Congress notes its passengers included more than 120 Americans on May 7, 1915, the day the luxury ocean liner was torpedoed by a German U-boat. History.com notes the Imperial German Embassy in Washington, D.C., placed ads in American newspapers reminding Americans that Germany and Britain were at war and

Wall Street crashes on Black Monday The stock market crash that began in October marked an end to the financial boom of the 1920s that the Federal Reserve notes had begun in August 1921 and lasted until September 1929. On what’s become known to historians as Black Monday (Oct. 28, 1929), the Dow Jones Industrial Average declined by nearly 13 percent, a fall that preceded an almost 12 percent