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Austria-Hungary Takes Control of Bosnia
Also known as the Annexation crisis, occured when Austria-Hungary announced the annexation of Bosnia and Herzegovina.
Russia, the Ottoman Empire, Britain, Italy, Serbia, Montenegro, Germany and France took an interest in these events. -
The Triple Alliance is Formed
The Triple Alliance was an alliance of British Trade Unions comprising the Miners Federation of Great Britain, the National Union of Railwaymen and the National Transport Workers' Federation.
The onset of the First World War, however, curtailed any imminent action by the Alliance. -
The Triple Entente is Formed
The Triple Entente was the name given to the alliance among Britain, France and Russia after the signing of the Anglo-Russian Entente in 1907.
The alliance provided a measure of international security because nations were reluctant to disturb the balance of power.entered it as Allies against Germany and Austria-Hungary. -
Archduke Franz Ferdinand is Assassinated in Sarajevo
Archduke Franz Ferdinand, and his wife, Sophie, Duchess of Hohenberg, were shot and killed in Sarajevo.
They were killed by Gavrilo Princip, one of a group of six Bosnian Serb assassins coordinated by Danilo Ilić. -
Austria-Hungary Declares War on Serbia
1 month after the assination of Ferdinand and his wife, Austria-Hungary declares war on Serbia, effectively beginning the First World War.
Austria-Hungary determined that the proper response to the assassinations was to prepare for a possible military invasion of Serbia. -
Germany Invaded Belgium
Germany did not withdraw from Belgium and Britain declared war on Germany.
Followed a strategy known as the Schlieffen Plan. This plan called for a holding action against Russia, combined with a quick drive through Belgium to Paris; after France had fallen, the two German armies would defeat Russia. -
A German U-Boat Sinks the Lusitania
A German submarine sinks the passenger liner Lusitania.
German counterblockade was created to counter the British blockade. During this period of time, the German U-Boats sank the Lusitania, killing nearly one thousand and five hundred peopleas well as turning Americans against the Central Powers. -
The First Battle of the Somme Begins
This battle began on July 1st and ended in the middle of November. The casualties totaled to about 1.2 million as a result of the tatic used, Trench Warfare. -
The Zimmerman Note is Discovered
-The note was intercepted by the U.S. government.
-Note was Written by Arthur Zimmerman, a german foreign secretary
--In this note he had secretly proposed a German- Mexican alliance
- The note was intercepted by the U.S. government. -
The United States Declares War on Germany
Congress authorizes a declaration of war against Germany.
Most Americans sided with the Allies, however, they did not want to join the fight. In 1917, however, the Americans began to mobilize for war for two reasons: to ensure the repayment of debts to the U.S. and to prevent a German threat to U.S. shipping.
