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Franz Ferdinand, the Archduke, was assassinated along with his wife, in Sarajevo. The attackers were Serbian military conspirators, the main attacker was Gavrilo Princip. The Austrian government blamed this on Serbia and after this, they declared war on Serbia.
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Just one month after the assassination of the Archduke, Austria-Hungary declares war on Russia. They know that they can't fight Russia alone. Germany accepted to fight Russia.
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Austria-Hungary was seeking support for their upcoming war against Russia. Germany accepted the help needed. Germany declared war on Russia just 4 days after Austria-Hungary did.
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Russia gets ready for a fight, along with France. Italy, Denmark, Sweden, and Norway decide not to fight. Germany also signed a secret peace treaty with the Ottoman Empire.
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Germany invades Belgium
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This cargo ship is sunk by German submarines, 128 of the passengers were Americans
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The first tanks are used by the British, they are good at plowing over barbed wire but fail in effort of fighting
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The US declares war on Germany
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Wilhelm escapes Germany, losing all hope for Germany winning the war
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Germany gives up after 4 years of fighting
