WWI

History (start if WWI)
WWI was started in 1914 as a result to the Assassination for Archduke Franz Ferdinand of Austria in June 28 1914 (Franz Ferdinand was shot by a Serbian man named Gavrilo Princip. One month after the assassination, a war was declared between Austria-Hungary and Serbia. Soon later the German Empire (1871-1918) joined the war against Serbia. Russia then joined the War. Countries like France, UK, Italy, Japan, Ottoman Empire and USA joined the war (though USA joined in 1917 after the Zimmermann Telegram was delivered to the US instead of Mexico, its intended recipient).

History (end of WWI)
In 1917, a Russian Bolshevik Vladimir Lenin arrived in St. Petersburg and started a revolution and pulled Russia out of WWI. The Central Powers (Germany, Austria, Turkey) rushed to defend the fallen Russian land and leaving a small amount of their forces in the West to defend Germany against the Allies (USA, UK and France). As a result, the German lines collapsed and one after one, the central powers surrendered and Germany surrendered at 11:11 11 November 1918. The Treaty of Versailles was signed on June 28 1919, 5 years after Franz Ferdinand was killed. The treaty’s requirements would soon be on of the reasons that WWII started.