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World War I, 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.
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On July 28, 1914, one month to the day after Archduke Franz Ferdinand of Austria and his wife were killed by a Serbian nationalist in Sarajevo, Austria-Hungary declares war on Serbia, effectively beginning the First World War.
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United States Congress declares war on Germany.
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The Treaty of Versailles (French: Traité de Versailles) was one of the peace treaties at the end of World War I. It ended the state of war between Germany and the Allied Powers. It was signed on 28 June 1919, exactly five years after the assassination of Archduke Franz Ferdinand.
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World War II, also known as the Second World War, was a global war that lasted from 1939 to 1945, although related conflicts began earlier.
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On this day in 1939, German forces bombard Poland on land and from the air, as Adolf Hitler seeks to regain lost territory and ultimately rule Poland. World War II had begun.
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May 10, 1940 Germany begins invasions of Belgium, the Netherlands, and France
