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The Assassination of Archduke Franz Ferdinand
A serbian man assassinated archduke franz ferdinand and his wife to gain land. -
germany attacking belgium and france.
To avoid the French along the border the german had to cross belgium and attack the french.The belium did not let them in to let them in so the german forced their way in. -
German submarine sunk the Lusitania
German submarine torpedoed the lusitania and it sank in 18 minutes The ship was carrying explosives for world war 1.It sank near the coast of Ireland -
Zimmermann sent a telegram to Mexico
Arthur Zimmermann sent a telegram to Mexico asking the country to start a border war and they would get back mexican land. -
War was officially declared against germany
President Woodrow Wilson declared war on germany because of unrestricted submarine warfare and tried to get Mexico to go against the United States.