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On 28 June 1914 Archduke Francesco Ferdinando of Austria was assassinated by a Serbian nationalist in Sarajevo. -
28 July 1914 -
On 01 August 1914 -
On 2 August 1914 -
On April 26, 1915, Italy signed the London Pact committing itself to engaged in war against the Central Powers in exchange for the irrepressive lands and Dalmatia. -
On April 26, 1915 Italy went to war alongside the Triple Entente (Austria, Germany and Italy) -
Between February and June 1916, the Battle of Verdun took place. The German breakthrough attempt was unsuccessful: 800,000 men fell between attackers and defenders with derisory territorial gains -
The Battle of the Somme, unleashed on 1 July 1916 by the French and English to repel the Germans. A million soldiers were sacrificed, with no advance from the troops -
At the Battle of Passchendaele between July and November 1917, 800,000 soldiers were wounded or killed in the Allied attack on German positions. -
Germany is also trying to bring the conflict to the seas, with the sinking of civilian and military ships, but US protests force Germans to stop submarine warfare -
On April 6, 1917, the United States entered the war alongside the Understanding, and in early 1918 President Wilson set out in the "fourteen points" the principles of American foreign policy, based on the rejection of imperialism and international cooperation -
On 24 October 1917 the Italians were defeated at Caporetto by Austro-German troops.The Italian army had 40,000 soldiers dead or wounded and about 400,000 men among prisoners, deserters, stragglers and refugees -
The Treaty of Brest-Litovsk (also known as the Brest Peace in Russia) was a peace treaty signed on March 3, 1918 between the new Bolshevik government of Russia and the Central Powers (German Empire, Austria-Hungary, Bulgaria, and the Ottoman Empire), that ended Russia's participation in World War I. -
With the creation of Yugoslavia there was discussion in Paris with Italy because it was dissatisfied with the division of the German territories and in addition Dalmatia was not annexed to it as it had been signed with the Pact of London, therefore the sacrifice of the Italian soldiers was not recognized -
Bulgaria signed the section on November 27, 1919 in exchange for ceded its territories to Yugoslavia and Romania, with the treaty of sèrves the Octamanian Empire had to cede its territories in the Middle East to France and the United Kingdom that will have to heal a huge war debt -
On June 28, 1919, the Treaty of Versailles was signed, imposing very harsh conditions on Germany. -
The Treaty of Saint-Germain-en-Laye (10 September 1919) and Trianon (4 June 1920) ratify the end of the Austro-Hungarian Empire and the birth of Czechoslovakia and Yugoslavia.