-
Declaration of Independence
the Declaration of Independence is at once the nation's most cherished symbol of liberty -
Monroe Doctrine
President James Monroe’s 1823 annual message to Congress contained the Monroe Doctrine, which warned European powers not to interfere in the affairs of the Western Hemisphere -
roosevelt corollary
The Roosevelt Corollary of December 1904 stated that the United States would intervene as a last resort to ensure that other nations in the Western Hemisphere fulfilled their obligations to international creditors, and did not violate the rights of the United States or invite “foreign aggression to the detriment of the entire body of American nations.” -
World war 1
World War I (WWI or WW1 or World War One), also known as the First World War or the Great War, was a global war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918. More than 9 million combatants and 7 million civilians died as a result of the war -
Sinking of the Lusitania
On May 7, 1915, less than a year after World War I (1914-18) erupted across Europe, a German U-boat torpedoed and sank the RMS Lusitania, -
Good neighbor policy
In his inaugural address on March 4, 1933, Roosevelt stated: “In the field of world policy I would dedicate this nation to the policy of the good neighbor—the neighbor who resolutely respects himself and, because he does so, respects the rights of others.” -
world war 2
It brought about major leaps in technology and laid the groundwork that permitted post-war social changes including the end of European colonialism, the civil rights movement in the United States, and the modern women’s rights movement, as well as the programs for exploring outer space -
Pearl Harbor
The attack was intended as a preventive action in order to keep the U.S. Pacific Fleet from interfering with military actions the Empire of Japan was planning in Southeast Asia against overseas territories of the United Kingdom, the Netherlands, and the United States. -
Bombing of Hiroshima
the United States used a massive, atomic weapon against Hiroshima, Japan. This atomic bomb, the equivalent of 20,000 tons of TNT, flattened the city, killing tens of thousands of civilians. -
Truman Doctrine
The Truman Doctrine was a United States policy to stop Soviet expansion during the Cold War. -
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
The Korean War began as a civil war between North and South Korea, but the conflict soon became international when, under U.S. leadership, the United Nations joined to support South Korea and the People’s Republic of China (PRC) entered to aid North Korea. The war left Korea divided and brought the Cold War to Asia. -
Eisenhower Doctrine
Under the Eisenhower Doctrine, a country could request American economic assistance and/or aid from U.S. military forces if it was being threatened by armed aggression from another state. -
Vietnam War
The Vietnam War was the prolonged struggle between nationalist forces attempting to unify the country of Vietnam under a communist government and the United States (with the aid of the South Vietnamese) attempting to prevent the spread of communism. -
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
Operation Desert Storm, popularly known as the first Gulf War, was the successful U.S.-Allied response to Iraq's attempt to overwhelm neighboring Kuwait. -
9/11
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. Often referred to as 9/11 -
war on terror
a term which has been applied to an international military campaign that started after the 11 September 2001 terrorist attacks on the United States. -
Afghanistan (Operation Enduring Freedom)
Operation Enduring Freedom begins. President George W. Bush announces that U.S. and British forces have begun airstrikes on Taliban and al Qaeda targets in Afghanistan. Airstrikes continue for five days. -
Operation Iraqi Freedom
The Iraq War[nb 1] was an armed conflict in Iraq that consisted of two phases. The first was an invasion of Iraq starting on 2003 March 20 by an invasion force led by the United States that led to the end of Ba'athist Iraq.[43][44][45][46] It was followed by a longer phase of fighting, in which an insurgency emerged to oppose the occupying forces and the newly formed Iraqi government.[ -
Air Strikes on ISIS
On August 8, US president Barack Obama announced that he had authorised targeted air strikes against Islamist militants in Iraq.According to the releases to date (10 September 2014), US Central Command have conducted 154 air strikes across Iraq.
