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Monroe Doctrine
foreign policy regarding domination of the Americas in 1823. It stated that further efforts by European nations to colonize land or interfere with states in North or South America would be viewed as acts of aggression, requiring U.S. intervention. -
Roosevelt Corollary
an addition to the Monroe Doctrine articulated by President Theodore Roosevelt in his State of the Union address in 1904 after the Venezuela Crisis of 1902–03. -
World War I
World War I started in Europe in 1914, but the United States did not get involved until 1917 when a German ship was sunken by an American vessel. This made America part of the war as it was now a target of Germany. -
Sinking of the Lusitania
The sinking of the Cunard ocean liner RMS Lusitania occurred on Friday, 7 May 1915 during the First World War, as Germany waged submarine warfare against the United Kingdom of Great Britain and Ireland. The ship was identified and torpedoed by the German U-boat U-20 and sank in 18 minutes. -
Good Neighbor Policy
was the foreign policy of the administration of United States President Franklin Roosevelt towards Latin America. Although the policy was implemented by the Roosevelt administration, 19th-century politician Henry Clay paved the way for it and coined the term "Good Neighbor". -
World War ll
The instability created in Europe by the First World War (1914-18) set the stage for another international conflict–World War II–which broke out two decades later and would prove even more devastating. Rising to power in an economically and politically unstable Germany, Adolf Hitler and his National Socialist (Nazi Party) rearmed the nation and signed strategic treaties with Italy and Japan to further his ambitions of world domination. -
Marshall Plan
On April 3, 1948, President Truman signed the Economic Recovery Act of 1948. It became known as the Marshall Plan, named for Secretary of State George Marshall, who in 1947 proposed that the United States provide economic assistance to restore the economic infrastructure of postwar Europe. -
Cuban Missile Crisis
The Cuban MIssile Crisis lasted thirteen days when American leaders discussed how to get rid of missiles the Soviet Union had near US shores. The US ended up agreeing to the Soviet leader and compromised the removal of the missiles in exchange for the states promosing to never invading Cuba. -
Operation Desert Storm
he name used for the military operation in which international armed forces, including British and US troops, attacked Iraq in the Gulf War. It began on 16 January 1991 and lasted 100 days. -
9/11
On September 11, 2001, 19 militants associated with the Islamic extremist group al-Qaeda hijacked four airliners and carried out suicide attacks against targets in the United States. Two of the planes were flown into the towers of the World Trade Center in New York City, a third plane hit the Pentagon just outside Washington, D.C., and the fourth plane crashed in a field in Pennsylvania. -
Afghanistan (Operation Enduring Freedom)
allied air strikes on Taliban and al Qaeda targets. The United States linked the September 11, 2001 terrorist attacks to al Qaeda, a group that operated under the Taliban regime's protection in Afghanistan. -
war on terror
Also known as Global War on Terrorism, was the international military campaign that started after 9/11 attacks on the United States.
