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Declaration of Independence
The fundamental document establishing the United States as a nation, adopted on July 4, 1776. The declaration was ordered and approved by the Continental Congress and written largely by Thomas Jefferson. -
Monroe doctrine
A principle of US policy, originated by President James Monroe in 1823, that any intervention by external powers in the politics of the Americas is a potentially hostile act against the US. -
Roosevelt Corollary
The Roosevelt Corollary is a corollary to the Monroe Doctrine that was articulated by President Theodore Roosevelt in his State of the Union address in 1904 after the Venezuela Crisis of 1902–03. -
Sinking of the Lusitania
The British ocean liner Lusitania is torpedoed without warning by a German submarine off the south coast of Ireland. Within 20 minutes, the vessel sank into the Celtic Sea. Of 1,959 passengers and crew, 1,198 people were drowned, including 128 Americans. -
World War 1
On April 6, 1917, two days after the U.S. Senate votes 82 to 6 to declare war against Germany, the U.S. House of Representatives endorses the decision by a vote of 373 to 50, and the United States formally enters the First World War. -
Good Neighbor Policy
The 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". -
WW2
The US was officially neutral from the begining of the war, but many Americans supported the Allied cause while very few Americans were sympathetic to the Axis. This changed when the Japanese attacked Pearl Harbour on December 7, 1941 and the United States became fully involved in the war. -
Bombing of Hiroshima
Bombing of Hiroshima and Nagasaki. On August 6, 1945, during World War II (1939-45), an American B-29 bomber dropped the world's first deployed atomic bomb over the Japanese city of Hiroshima. -
Truman Doctrine
The Truman Doctrine was a policy set forth by U.S. President Harry S Truman on March 12, 1947 stating that the U.S. would support Greece and Turkey with economic and military aid to prevent their falling into the Soviet sphere. -
Marshall Plan
The Marshall Plan was the American initiative to aid Europe, in which the United States gave $17 billion in economic support to help rebuild European economies after the end of World War II in order to prevent the spread of Soviet Communism. -
Korean War
A war, also called the Korean conflict, fought in the early 1950s between the United Nations, supported by the United States, and the communist Democratic People's Republic of Korea (North Korea). The war began in 1950, when North Korea invaded South Korea. -
Eisenhower Doctrine
Eisenhower Doctrine, (Jan. 5, 1957), in the Cold War period after World War II, U.S. foreign-policy pronouncement by President Dwight D. Eisenhower promising military or economic aid to any Middle Eastern country needing help in resisting communist aggression. -
Cuban Missile Crisis
The Cuban Missile Crisis of October 1962 was a direct and dangerous confrontation between the United States and the Soviet Union during the Cold War and was the moment when the two superpowers came closest to nuclear conflict. -
Operation Desert Storm
The Gulf War (2 August 1990 – 28 February 1991), codenamed Operation Desert Shield (2 August 1990 – 17 January 1991), for operations leading to the buildup of troops and defense of Saudi Arabia and Operation Desert Storm (17 January 1991 – 28 February 1991) was a war waged by coalition forces from 34 nations led by the United States against Iraq in response to Iraq's invasion and annexation of Kuwait. -
The War on Terror
The War on Terror (WOT), also known as the Global War on Terrorism (GWOT) is a term which has been applied to an international military campaign that started after the 11 September 2001 terrorist attacks on the United States. -
9/11
The day on which the twin towers of the World Trade Center in New York were flown into and destroyed by airplanes hijacked by Al-Qaeda. -
Operation Enduring Freedom
"Operation Enduring Freedom" (OEF) is the official name used by the U.S. government for the War in Afghanistan, together with a number of smaller military actions, under the umbrella of the Global "War on Terror" (GWOT). -
Operation Iraqi Freedom
President Barack Obama announces a date for the end of U.S. combat operations in Iraq: August 31, 2010. June 30, 2009 - U.S. troops pull back from Iraqi cities and towns and Iraqi troops take over the responsibility for security operations. -
Air Strikes on ISIS
The united states, along with some other countries bomb ISIS.
