article: World War I
links: Bolshevik Party League of Nations Ukraine Liège Africa Greece Naval mine United States Ferdinand I of Bulgaria Baltic Sea Treaty of Sèvres Switzerland United States Senate Second Polish Republic European theatre of World War I British Army Woodrow Wilson Mensheviks Republic of Turkey United Kingdom Russian Civil War Gallipoli Campaign Hindenburg Line Soviet Union Adriatic Sea Central Powers Iraq Joseph Stalin Hundred Days Offensive North Sea British Empire Trench warfare Bolsheviks France Kingdom of Hungary (1920–46) Arabian Peninsula H. H. Asquith Eastern Front (World War I) RMS Lusitania Balkan Wars Archduke Franz Ferdinand of Austria Black Hand British Indian Army Remembrance Day Serbia Gavrilo Princip First Battle of the Marne Russian Revolution Austria-Hungary Lord Kitchener Wilhelm II, German Emperor Russia Mesopotamia United States president Vladimir Lenin Slavic peoples Sturmabteilung Treaty of Saint-Germain-en-Laye (1919) Nicholas II of Russia Vickers machine gun Human Treaty of Trianon Finland Bulgaria Western Front (World War I) Bosnia and Herzegovina Battle of Tannenberg (1914) Nicholas II Kingdom of Serbia Mexican–American War Mehmed V Assassination of Archduke Franz Ferdinand Treaty of Brest-Litovsk German army Pilot Middle Eastern theatre of World War I Southwestern United States Treaty of Versailles Schlieffen Plan Mexico Turkey Raymond Poincaré Emperor Taishō July Ultimatum Sarajevo David Lloyd George Airplane Allies of World War I Belarus World War I Belgium Royal Navy Zimmerman Telegram U-boat Italian Campaign (World War I) Treaty of Lausanne Ottoman Empire Eastern Europe Battle of the Somme World War I reparations Russian Empire Baltic states Aerial warfare Franz Joseph I German Empire World War II Mark V tank Eastern Front of World War I Spring Offensive Death by natural causes 1917 Europe