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Battle of Gallipoli, Somme
The Battle of the Somme 1 July 18 November 1916 was a joint operation between British and French forces intended to achieve a decisive victory over the Germans on the Western Front after 18 months of trench deadlock.
(Imperial War Museums, 2023) -
Balkan Wars
Balkan Wars 1912 13 two successive military conflicts that deprived the Ottoman Empire of all its remaining territory in Europe except part of Thrace and the city of Adrianople Edirne. The second conflict erupted when the Balkan allies Serbia, Greece, and Bulgaria quarreled over the partitioning of their conquests.
(The Editors of Encyclopedia Britannica, 2023) -
World War I begins
World War I began after the assassination of Austrian archduke Franz Ferdinand by South Slav nationalist Gavrilo Princip on June 28, 1914.(History.com Editors, 2021) -
Assassination of Archduke Ferdinand
The assassination of Archduke Franz Ferdinand their to the Austro Hungarian throne, and his wife Sophie in Sarajevo on 28 June 1914 eventually led to the outbreak of the First World War.(Greenspan, 2020) -
Lusitania sinks
A German U-boat torpedoed the British-owned steamship Lusitania, killing 1,195 people including 128 Americans, on May 7 1915. The disaster set off a chain of events that led to the U.S. entering World War I.
(The Editors of Encyclopedia Britannica, 2023) -
Battle of Verdun
Battle of Verdun, February 21–December 18, 1916 World War I engagement in which the French repulsed a major German offensive.
(Imperial War Museums, 2023) -
The Treaty of Versailles signed
The Treaty of Versailles was signed by Germany and the Allied Nations on June 28 1919 formally ending World War One. The terms of the treaty required that Germany pay financial reparations disarm lose territory and give up all of its overseas colonies.
(The Editors of Encyclopedia Britannica, 2023) -
Battle of Argonne
with over a million American soldiers participating. It was also the deadliest campaign in American history resulting in over 26,000 soldiers being killed in action and over 120,000 total casualties.(Goldenberg, 2018) -
Zimmermann Note
The Zimmermann Telegram was a secret diplomatic communication issued from the German Foreign Office in January 1917 that proposed a military contract between the German Empire and Mexico if the United States entered World War I against Germany.
(The Editors of Encyclopedia Britannica, 2023) -
Russia withdraws from war
since there was an socialist revolution was taking place in the country and it was going under a turmoil with internal revolution(History.com Editors, 2021) -
Russian Revolution
Russian Revolution of 1917 Revolution that overthrew the imperial government and placed the Bolsheviks in power.(Kiger, 2021) -
Battle of Chateau-Thierry
The Battle of Château-Thierry was fought on July 18 1918 and was one of the first actions of the American Expeditionary Forces under General John J. Pershing. It was a battle in World War I as part of the Second Battle of the Marne initially prompted by a German Spring Offensive.
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Armistice of WW1
The Armistice was the ceasefire that ended hostilities between the Allies and Germany on 11 November 1918.
(Sawer, n.d.) -
First meeting of the League of Nations
The League of Nations officially came into existence on 10 January 1920. On 15 November 1920 41 members states gathered in Geneva for the opening of the first session of the Assembly.(United Nations, n.d.) -
U.S. enters war
On June 28, 1914 Archduke Franz Ferdinand heir to the throne of the Austro Hungarian Empire, and his wife Sophie were assassinated by a Bosnian Serb nationalist in Sarajevo the capital of the Austro Hungarian province of Bosnia and Herzegovina.
(History.com Editors, 2021)