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Allies
there were two major defense alliances in Europe. The Triple Entente, later known as the Allies, consisted of France, Britain, and Russia. The Triple Alliance consisted of Germany, Austria-Hungary, and Italy. -
Central Powers
Germany and Austria-Hubgary, together with the Ottoman Empire- and empire of mostly Middle Eastern lands controlled by the Turks- were later known as the Central Powers.
The Central Powers was a group of nations fighting against the Allied Powers during World War I; the members included Germany, Austria-Hungary, the Ottoman Empire, and their territories. -
Schlieffen Plan
The Schlieffen Plan was a 1905 German General Staff thought-experiment which later became a deployment-plan and set of recommendations for German Commanders to implement using their own initiative.
It took nine years to finalise, but it was based on the theory that Germany would be at war with France and Russia at the same time. -
1914 Assassination of Archduke Franz Ferdinand
Archduke Franz Ferdinand, heir to the Austrian throne, visited the bosnian capital Sarajevo.
Archduke Franz Ferdinand of Austria and his wife Sophie are shot to death by a Bosnian Serb nationalist during an official visit to the Bosnian capital of Sarajevo. -
Sinking of British liner Lusitania
A U-boat sank the British Luistania off the southern coast of Ireland. 1,198 persons lost, 128 Americans. -
Sinking of British liner Arabic
A U-boat sank another British liner, the Arabic, drowning two Americans. Again the United States protested, and this time Germany agreed not to sink any more passanger ships. But in March 1916 Germany broke their promise sinking an unarmed French ship, the Sussex. -
Sinking of French passenger liner Sussex
Germany broke its promise and torpedoed an unarmed French passenger steamer, the Sussex. The Sussex sank, and about 80 passangers, including Americans, were killed or injured.Once again the US wanred that it would break off diplomatic relations unless Germany changed its tactics. -
Zimmerman note
a telegram from the Germanforeign minister to the intercepted by British agents. The telegram proposed an alliance between Mexico and Germany and promised that if war with the US broke out, Germany would support Mexico in recovering "lost territoery in Texas, New Mexico, and Arizona." -
Selective Service Act of 1917
The Selective Service Act or Selective Draft Act authorized the federal government to raise a national army for the American entry into World War I through the compulsory enlistment of people. -
Battle of the Somme
The Battle of the Somme, also known as the Somme Offensive, was one of the largest battles of the First World War. Fought between July 1 and November 1, 1918 near the Somme River in France, it was also one of the bloodiest military battles in history. On the first day alone, the British suffered more than 57,000 casualties, and by the end of the campaign the Allies and Central Powers would lose more than 1.5 million men. 3 main trenches, front line,support, and reserve.
