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Archduke Francis Ferdinand Assassinated
- Shot to death by a Bosnian Serb nationalist during a visit to Bosnian capital of Sarajevo.
- Five years to the day after Franz Ferdinand’s death, Germany and the Allied Powers signed the Treaty of Versailles, officially marking the end of World War I.
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Austria-Hungary declares war on Serbia
- War declared 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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Germany Declares war on Russia
- Russia and Germany declared war on each other on the same day.
- More then 20 million lives were lost.
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Germany declares war on France
- Two days after declaring war on Russia, Germany declares war on France.
- France makes its own declaration of war against Germany, readying its troops to move into the provinces of Alsace and Lorraine
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Germany Invades Belgium
- German military operations in Belgium were intended to bring the 1st, 2nd and 3rd armies into positions in Belgium
- On 2 August the German government sent an ultimatum to Belgium, demanding passage through the country and German forces invaded Luxembourg
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Germany U-Boats sink the Luistania
- At 2:12 p.m. the 32,000 ton ship was hit by an exploding torpedo.
- The Luistania sank within 20 minutes.
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Germany Announces Unrestricted Submarine Warfare
- Unrestricted submarine warfare is a type of naval warfare in which submarines sink vessels such as freighters and tankers without warning.
- After Germany introduced unrestricted submarine warfare, countries tried to limit and abolish submarines.
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The ZImmerman note is discovered
- Was a 1917 diplomatic proposal from the German Empire offering a military alliance with Mexico.
- a message from the German foreign secretary, Arthur Zimmermann, to the German ambassador to Mexico proposing a Mexican-German alliance in the case of war between the United States and Germany
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The United States Declares War on Germany
- At 8:30 on the evening of April 2 President Wilson appeared before congress and asked for declaration of war against Germany.
- On April 4, Congress granted Wilson's request.
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The Russian Monarchy is Overthrown
- Russia became a representative gorverment.
- Vladimir Lenini overthrew the provisional governement.