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  The assassins became know as Young Bosnia.Austria-Hungary then declared war.
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  World War I was also know as the first war of the great war.Seven million civilians and nine million combatants died of the result of World War I.
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  The Russian Revolution is the collective term for a pair of revolution in Russia. The Russia revolution ended in nov 07,1917.
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  The treaty of versailles was the peace settlement signed after war world one. It had ended in 1918 and in the russian revolution.
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  The Depression started because the stock market had crashed. People started to lost they businesses.
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  Hitler killed a lot of jews. Holocaust ended in May 8, 1945.
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  Hitler was chancellor since january 30,1933.He was elected in Germany.
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  The Soviet Union entered World War II because Germany disregarded their mutal nonaggression. The Soviet invaded russia.
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  This how World War I started Hitler wanted Germay to control Europe and Japan wanted to control Asia and the Pacific.Then Japan attacked China and Germany invaded polan and this how World War I started
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  The invasion of poland was also known as the September Campagin. It ended in October 06,1939.
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  Pearl Harbor started because when Japan attack the United State navel base at the Pearl Harbor. The attack happen in Hawwai
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  The start of the Cold War two years later after World War II.The Cold War ended in 1991.
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  The NATO was signed on April 4,1949. Twenty-Two countries participate in NATO.