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First meeting of the league of nations in london.
explanation: The League held its first council meeting in Paris on 16 January 1920, six days after the Versailles Treaty and the Covenant of the League of Nations came into force.
significance: On 1 November 1920, the headquarters of the League was moved from London to Geneva, where the first General Assembly was held on 15 November 1920.

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Treaty of Versailles conference opens.
explanation: Negotiated among the Allied powers with little participation by Germany, its 15 parts and 440 articles reassigned German boundaries and assigned liability for reparations.
significance: The Treaty of Versailles was the most important of the peace treaties that brought World War I to an end.

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Armistice signed.
explanation: fighting ends at 11am.
significance: marked a win for the allies and a loss for germany.

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Wilson outlines the 14 points.
explanation: The principles were outlined in a January 8, 1918 speech on war aims and peace terms to the United States Congress by President Woodrow Wilson.
significance: The Fourteen Points was a statement of principles for peace that was to be used for peace negotiations in order to end World War I.

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Russia withdraws from the war.
explanation: Lenin wanted to concentrate on building up a communist state and wanted to pull Russia out of the war. ... Germany on the other hand had to remove their army from Russian lands.
significance: Russia is no longer apart of ww1.

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October revolution occurs in Russia.
explanation: Bolsheviks under Lenin gain control of Russia.
significance:
Weakness of the Provisional Government, economic and social problems and continuation of the war led to growing unrest and support for the Soviets. Led by Lenin, the Bolsheviks seized power.

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us troops land in France.
explanation:
only 14,000 American soldiers had arrived in France, and the AEF had only a minor participation at the front through late October 1917.
significance: we had more soldiers to help fight.

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US Declares war.
explanation:President Wilson appeared before a joint session of Congress and asked for a declaration of war against Germany in order to "make the world safe for democracy."
signifcane: the united states entered ww1.

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first Russian revolution
explanation:The Russian Empire collapsed with the abdication of Emperor Nicholas II and the old regime was replaced by a provisional government during the first revolution of February 1917.
significance: It removed Russia from the war and brought about the transformation of the Russian Empire into the Union of Soviet Socialist Republics (USSR), replacing Russia's traditional monarchy with the world's first Communist state.

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Germany resumes unrestricted submarine warfare.
explanation: Unrestricted submarine warfare was suspended following public outcry in the US, but was reinstated in 1917.
signficance: This eventually led to the American declaration of war on Germany.

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Zimmerman note.
explanation: was a secret diplomatic communication issued from the German Foreign Office in January 1917 that proposed a military alliance between Germany and Mexico in the prior event of the United States entering World War I against Germany.
significance:  In January 1917, British cryptographers deciphered a telegram from German Foreign Minister Arthur Zimmermann to the German Minister to Mexico, von Eckhardt, offering United States territory to Mexico in return for joining the German cause.

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Germany calls off unrestricted submarine warfare
explantion: He believed that the sinking of a few neutral merchant ships at the start of a campaign of unrestricted submarine warfare would be enough to scare off most ships from trading with Britain.
signifcance: On February 18th, 1915, Germany announced that it would start a commerce war against those nations trading with Britain.

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the lusitania is sunk
explanation: a German U-boat torpedoed and sank the RMS Lusitania, a British ocean liner en route from New York to Liverpool, England.
significance: the us joined ww1 a few days later

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world war 1 begins.
explanation: July 28, 1914 - Austria-Hungary declares war on Serbia. August 1, 1914 - Germany declares war on Russia. August 2, 1914 - Ottoman Empire (Turkey) and Germany sign a secret treaty of alliance. August 4,1914 - Germany invades Belgium.
significance: there was a war

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assassination in sarajevo.
explanation: The assassination of Archduke Franz Ferdinand of Austria.
significance: he assassination of Archduke Franz Ferdinand in Sarajevo on 28th June 1914, it triggered a chain of events that resulted in World War 1.