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WW1
World War I, also known as the First World War or the Great War, was a global war centered in Europe that began on 28 July 1914 and lasted until 11 November 1918. -
The Great Depression
he Great Depression (1929-39) was the deepest and longest-lasting economic downturn in the history of the Western industrialized world. -
The dust bowl
The Dust Bowl, also known as the Dirty Thirties, was a period of severe dust storms that greatly damaged the ecology and agriculture of the US and Canadian prairies during the 1930s; severe drought and a failure to apply dryland farming methods to prevent wind erosion (the Aeolian processes) caused the phenomenon. -
Holocaust
The Holocaust, also known as the Shoah, was a genocide in which approximately six million Jews were killed by Adolf Hitler's Nazi regime and its collaborators. -
WW2
World War II, also known as the Second World War, was a global war that lasted from 1939 to 1945, though related conflicts began earlier. -
Pearl Harbor
The attack on Pearl Harbor was a surprise military strike by the Imperial Japanese Navy against the United States naval base at Pearl Harbor, in the United States Territory of Hawaii, on the morning of December 7, 1941. -
Oklahoma Bombings
The Oklahoma City bombing was a domestic terrorist bomb attack on the Alfred P. Murrah Federal Building in downtown Oklahoma City on April 19, 1995. -
Vietnamese War
The Vietnam War, also known as the Second Indochina War, and also known in Vietnam as Resistance War Against America or simply the American War, was a Cold War-era proxy war that occurred in Vietnam, -
Three Mile Island
The Three Mile Island accident was a partial nuclear meltdown that occurred on March 28, 1979, in one of the two Three Mile Island nuclear reactors in Dauphin County, Pennsylvania, United States. -
9-11
The September 11 attacks were a series of four coordinated terrorist attacks by the Islamic terrorist group al-Qaeda on the United States on the morning of Tuesday, September 11, 2001 -
DC Sniper
The Beltway sniper attacks were a series of coordinated shootings that took place over three weeks in October 2002 in Maryland, Virginia, and Washington, D.C. -
Bali Bombings
The 2002 Bali bombings occurred on 12 October 2002 in the tourist district of Kuta on the Indonesian island of Bali. The attack killed 202 people. A further 209 people were injured. -
Virginia Tech shooting
The Virginia Tech shooting was a school shooting that took place on April 16, 2007, on the campus of Virginia Polytechnic Institute and State University in Blacksburg, Virginia, United States. -
Boston Bombings
The Boston Marathon bombing was a terrorist attack, followed by subsequent related shootings, that occurred when two pressure cooker bombs exploded during the Boston Marathon on April 15, 2013.