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  More than 9 million combatants were killed, leading WWI to be the fifth-deadliest conflict in world history.
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  More than 9 million combatants were killed, leading WWI to be the fifth-deadliest conflict in world history.
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  NCSS engages and support educators in strengthening and advocating social studies.
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  The Great Depression became world wide news with the stock market crash on October 29, also known as Black Tuesday.
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  The Great Depression became world wide news with the stock market crash on October 29, also known as Black Tuesday.
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  It was the most widespread war in history, with more than 100 million people, from more than 30 different countries, serving in military units.
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  It was the most widespread war in history, with more than 100 million people, from more than 30 different countries, serving in military units.
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  http://youtu.be/Nt13c3olXkUThe Japanese attack on Pearl Harbor led the United States to enter into World War II.
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  At the end of the Korean War, a divide was drawn on the 38th parallel which now divides North and South Korea.
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  At the end of the Korean War, a divide was drawn on the 38th parallel which now divides North and South Korea.
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  Most civil rights movements relied on the technique of civil resistance, using nonviolent methods of struggle, to achieve their aims.
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  Most civil rights movements relied on the technique of civil resistance, using nonviolent methods of struggle, to achieve their aims.
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  The launch of Sputnik bagan the Space Age and triggered the Space Race, which brought in new political, military, technological, and scientific developments.
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  South Veitnam was supported by the United States and other anti-communist countries.
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  South Veitnam was supported by the United States and other anti-communist countries.
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  Yuri Gagarin was in space for a total of 1 hour and 48 minutes.
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  Neil Armstrong and Buzz Aldrich were the first two men to step foot on the moon, investigating how easily a person could operate on the lunar surface.
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  The Watergate scandal led to the resignation of Richard Nixon, the only resignition of a U.S. president to date.
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  The No Child Left Behind Act requires states to develop assessments in basic skills that, in order to recieve funding, states must pass.
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  The No Child Left Behind Act requires states to develop assessments in basic skills that, in order to recieve funding, states must pass.
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  Al-Qaeda hijacked four planes, crashing two into the North and South towers of the World Trade Center, one into the Pentagon, and one crashing into a field intentionally set for Washington D.C.