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Mutual Defense Alliances
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Assassination of Archduke Franz Ferdinand at Sarajevo
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Battle of Dogger Bank: naval engagement between squadrons of the British Grand Fleet and the German High Seas Fleet
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Battle of Le Hamel : a successful attack by Australian Army and US Army infantry, supported by British tanks, against German positions
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Germany signed an armistice (an agreement for peace and no more fighting) that had been prepared by Britain and France
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Treaty of Versailles : essentially no compromising; Germany was forced to sign the settlement, which led to them feeling a strong desire for revenge
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Italy needed to recover from the war quickly, and Russia needed to industrialize quickly. These both led to some very powerful people to take over these countries.
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Hitler invades Poland on 1 September. Britain and France declare war on Germany two days later
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Battle of Midway : American naval victory in June marks turning point in Pacific War
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The beginning of the Cold War, between the United States-led NATO alliance and the the Soviet-led Warsaw Pact
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The creation of the state of Israel in 1948, which marked the escalation of the Arab-Israeli conflict