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Archduke Francis Ferdinand was assassinated on june 28,1914 after avoiding getting bombed -
a month after the assassination of Archduke Franz Ferdinand and his wife Sophie was was declared on July 28,1914 -
Austria knew that conflict with Serbia would likely involve Russia, which saw itself as Serbia's protector -
where the French army and British Expeditionary Force stop Germany's swift advance into France. -
Utilizing its naval resources, Germany tried to enforce its own blockade in the North Sea. -
The Gallipoli campaign was the land-based element of a strategy intended to allow Allied ships to pass through the Dardanelles, capture Constantinople and kick out the ottoman empire -
passenger liner Lusitania during crossing from New York to Liverpool, England, killing 128 Americans. -
At the beginning of the war, the Italian army boasted less than 300,000 men, but mobilization greatly increased its size to more than 5 million -
The Battle of Verdun began on 21 February 1916 at 7.15 am when the German army began pounding the forts and trenches with artillery fire. -
fought over two days from 31 May 1916, was the largest sea battle of the First World War. -
Advancing British troops found that the German defences had not been destroyed as expected and many units suffered very high casualties with little progress. The Somme became an attritional or 'wearing-out' battle. -
550,000 French and 450,000 German casualties. -
hours after Germany declared war on the United States after the attack on Pearl Harbor by the Empire of Japan -
The United States signs treaty of guaranty, pledging to defend France in case of an unprovoked attack by Germany. -
when the war was ending -
the war finally ends and everyone is at peace and borders are now different