Origins of the First World War~

German Empire proclaimed

Jan 18, 1871

Wikipedia The German Empire is the common name given to the state officially named German Reich. Designating Germany from the unification of Germany and proclamation of Wilhelm I as German Emperor on 18 January 1871, to 1918.

Austro-German Dual Alliance

Oct 16, 1879

Wikipedia
The Dual Alliance was a defensive alliance between Germany and Austria-Hungary, which was created by treaty on 7 October 1879 as part of Bismarck's system of alliances to prevent/limit war. In it, Germany and Austria-Hungary pledged to aid one another in case of an attack by Russia.

Triple Alliance between Germany, Austria-Hungary and Italy

May 20, 1882

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The Triple Alliance was the military alliance among Germany, Austria–Hungary, and Italy that lasted from 1882 until the start of World War I in 1914. Each member promised mutual support in the event of an attack by any other great power, or for Germany and Italy, an attack by France alone.

Wilhelm II becomes Emperor of Germany

Jun 15, 1888

Wikipedia
Frederick William Victor Albert of Prussia; 27 January 1859 – 4 June 1941 was the last German Emperor (Kaiser) and King of Prussia, ruling the German Empire and the Kingdom of Prussia from 15 June 1888 to 9 November 1918.

Franco-Russian Entente

Jan 4, 1894

Wikipedia
The Franco-Russian Alliance was a military alliance between the French Third Republic and the Russian Empire that ran from 1892 to 1917.

First_Balkan_War

Oct 8, 1912

Wikipedia
The First Balkan War, which lasted from October 1912 to May 1913, pitted the Balkan League (Serbia, Greece, Montenegro and Bulgaria) against the Ottoman Empire.

Second Balkan War begins

Jun 29, 1913

Wikipedia
The Second Balkan War was a conflict which broke out when Bulgaria, dissatisfied with its share of the spoils of the First Balkan War, attacked its former allies, Serbia and Greece.