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How did World War II begin?

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Quick Answer

World War II began when Germany invaded Poland in 1939. The invasion began on September 1, but the war didn't begin officially until Great Britain and France declared war on Germany.

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How did World War II begin?
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Full Answer

Prior to invading Poland, Germany took over Austria and Czechoslovakia. The nations of Europe, led by Great Britain and France, hoped that by allowing Adolf Hitler, Germany's dictator, to have additional territory, that they could avoid war. Hitler, however, saw the concessions as a sign of weakness and continued his conquest of Europe.

To create a justification for invading Poland, Heinrich Himmler devised a plot in which a prisoner was taken from a German concentration camp, dressed in a Polish army uniform and shot near the border between Germany and Poland. The Germans then used the dead soldier as evidence of a Polish attack on Germany. The German army quickly defeated the Polish forces and proceeded to attack and conquer most of Western Europe, including Belgium, the Netherlands, Norway and France.

The United States entered World War II on December 8, 1941 by declaring war on Japan for bombing the United States naval base at Pearl Harbor on December 7. The U.S. entered the war in Europe when Germany declared war on December 11, 1941.


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    Why did World War II start?

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    World War II began mainly as a result of Nazi Germany reoccupying increasing amounts of land over which, according to the terms of the Treaty of Versailles, it no longer had claim. England and France, allied countries that fought against Germany in World War I, declared war on Germany on Sept. 3, 1939, after it invaded Poland, despite repeated demands to cease military occupation.

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    The timeline of World War II officially begins in 1939, when Germany invaded Poland, causing Britain and France to declare war on Germany, and ends with Japan's surrender Sept. 2, 1945. But the first rumblings of World War II began in 1932, when the Nazi party won a majority in the German legislature and Japan invaded Manchuria, which it held until the war was over.

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    When did WW2 start?

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    World War II began on Sept. 1, 1939, when Germany invaded and conquered Poland. Other countries soon joined forces in an effort to stop Germany from committing further acts of aggression, resulting in a war that lasted for 6 years and spanned the globe.

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    Why did Britain and France declare war on Germany?

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    France and Britain declared war on Germany on Sept 3, 1939 in response to Germany's invasion of Poland on Sept 1, 1939. France and Germany were allies, and they combined forces with many other allied countries to defeat Germany.

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