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The Triple Entente Is Formed
Informal coalition between Great Britain, France and Russia
International tension increased -
The Triple Alliance Is Formed
The Triple Alliance consisted of Germany, Austria-Hungary, and Italy.
The alliances provided a measure of international security -
Assassination of Archduke Ferdinand
Heir to the Austrian throne
Serbian nation-alist Gavrilo Princip stepped from the crowd and shot the Archduke and his wife Sophie. -
Austria-Hungary Declares War on Serbia
The assassinations touched off a diplomatic crisis.
The alliance system pulled one nation after another into the conflict. -
Germany Invaded Belgium
Used a strategy known as the Schlieffen Plan
As German troops swept across Belgium, thousands of civilians fled in terror. -
A German U-Boat Sinks The Lusitania
Off thr Southern coast of Ireland
1,198 people died
128 of them were Americans -
The First Battle of the Somme Begins
The British had nearly 60,000 casualties (20,000 dead) on the first day of the attack.
In September the British introduced their new weapon, the tank -
The Zimmerman Note Is Discovered
Telegram from the German minister to the German ambassador in Mexico that wasintercepted by British agents.
Proposed an alliance
Mexico wanted support from Germnay if they went up against the US to take back lost territory in Texas, Arizona, and New Mexico -
The United States Declares War On Germany
“ Property can be paid for; the lives of peaceful and innocent people cannot be." President Wilson
The United States was not prepared for the war.
Only 200,00 men were in service when war was declared.
