Name Date MOD. Terms and People French region lost to German states in a glorification of the military. archduke of

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1 Name Date MOD United States History Section 10:1 [Slide 1] Objectives Identify the causes of World War I. Describe the course and character of the war. Explain why the United States entered the conflict on the side of the Allies. [Slide 2] Terms and People French region lost to German states in 1871 a glorification of the military archduke of who was assassinated in 1914 the _ that stretched from the Belgian coast to the Swiss border with France, forming the battlefield between the Allies and the Central Powers in Western Europe [Slide 3] killed, wounded, or missing soldier weapons and other war supplies a German submarine English passenger ship sunk by a German U-boat, killing American civilians a telegram in which the German foreign minister proposed an alliance with Mexico against the U.S. US History Section 10:1-1

2 [Slide 4] What caused World War I, and why did the United States enter the war? In 1914,,,, and entangling combined to drag Europe into a world war. The United States attempted to but its of. [Slide 5] In 1914, five factors made Europe a powder keg ready to explode. ambitions [Slide 6], or devotion to one s country,. Among the powers of Europe, caused a desire to avenge perceived insults and past losses. Some felt and. Social Darwinists applied the idea of survival of the fittest to nations. US History Section 10:1-2

3 [Slide 7] for trade and colonies increased nationalistic feelings. caused a in Africa, the Pacific islands, and China. provided a that or overly. [Slide 8] Nations stockpiled new technology, including machine guns, mobile artillery, tanks, submarines, and airplanes. [Slide 9] On June 28, 1914, Serb nationalists assassinated the heir to the throne of,,. The a chain of events that drew into a. US History Section 10:1-3

4 [Slide 10] caused the conflict to spread quickly, creating two main combatants. Powers included,,, and. Powers included and. [Slide 11] Germany invaded, a country, to attack France. The German advance was stopped about 30 miles from Paris. The war bogged down as both sides dug a long series of trenches, creating the. US History Section 10:1-4

5 [Slide 12] The era s deadly defensive weapons made attacks difficult and dangerous. Deadly Technology of World War I Artillery field guns Submarines and armored cars Airplanes Improved machine guns could fire 600 bullets per minute. These long-range cannons caused more casualties than any other type of weapon. Gases such as chlorine, phosgene, and mustard gas could kill, blind, or burn their victims. German U-boats, or submarines, used torpedoes as well as on-deck guns to sink ships. Both sides tried to develop vehicles that could go over the rough ground and barbed wire barricades of no man s land, with limited success. Planes were used for, bombing, and fighting but did not prove decisive. Neither side could overcome the other s defenses, and a _ quickly developed. [Slide 13] As the war dragged on in Europe,. The United States had a long. Yet had been and still identified with their homelands. [Slide 14] U.S. fell into three main groups. Favored staying out of the war Favored fighting on the Allies side Wanted the U.S. to play a role for peace but not fight US History Section 10:1-5

6 [Slide 15] Britain s goal was to intercept goods. Early in the war, the British navy had set up a blockade of Germany. In defiance of international law,, such as food and gasoline,. responded by trying to [Slide 16] German torpedoed ships bound for Britain. On May 7, 1915, a U-boat sank the British passenger ship off the coast of Ireland, killing many Americans. US History Section 10:1-6

7 [Slide 17] Americans were angry about the. to any more. President Wilson still wanted peace, but he began to prepare for the possibility of war. In 1916, Congress expanded the army and authorized more warships. [Slide 18] in 1917 led President Wilson to ask Congress to declare war on the Central Powers. The was intercepted. In this telegram, Germany tried to forge an alliance with Mexico against the United States., sinking any ship headed for Britain. [Slide 19] On, Wilson asked Congress to declare war against Germany, saying The world must be made safe for democracy. Congress responded with a declaration of war on, and the. US History Section 10:1-7