• Unit 10: World War I

    By the early 20th century, competition among the European states over colonial resources began to affect the cohesion of the international community. A growing arms race between Great Britain and Germany raised concerns about European stability. In response, European nations began making secret military alliances for mutual protection in the event of war.

    Tensions finally came to a head in the summer of 1914 when Serbian terrorists assassinated Archduke Franz Ferdinand of Austria-Hungary. Germany and Austria-Hungary threatened to invade Serbia, but Russia elected to protect the small state. As a result, these nations declared war on each other, and treaty alliances forced France and Great Britain to join the conflict. By the end of World War I in November 1918, the fighting had consumed more than eight million lives and was the most deadly and destructive conflict in world history.

    In this unit, we examine the origins of World War I and why it spread so rapidly worldwide. We evaluate the role the colonies played in the conflict, how European states tried to maintain their colonial possessions with post-war peace agreements, and how the colonized peoples began challenging European rule.

    Completing this unit should take you approximately 4 hours.

    • 10.1: Alliances, Expansion, and Conflict

      Between 1815 and 1914, Europe seemed to enjoy a period of peace. While there were smaller conflicts like the Crimean War and the wars that unified Germany, no conflicts dragged the whole continent into fighting. However, the peace was fragile. States still engaged in conflicts with each other, and their rivalries prompted them to form alliances with other states. The countries felt the need to maintain the existing power balance, fearing that anybody's advantage might disadvantage someone else. Over time, this system became untenable.

    • 10.2: Total War

      Many European armies were accustomed to fighting colonial wars against foes with inferior weaponry and had not experienced fully mechanized war. The result was a slaughter on all sides and a stalemate since neither side had an immediate or obvious advantage over the other. Societies became mobilized to produce almost exclusively for the war effort, leading to dramatic changes at home.

    • 10.3: The Peace Settlement

      The entry of the United States into the war ultimately tipped the balance in favor of the Allies. Even with Russia's surrender, Germany could not move troops quickly enough to defeat France, and years of blockade had taken their toll on the German homefront. Facing defeat and revolution at home, Germany, Austria-Hungary, and the Ottoman Empire surrendered. But now came the more difficult task of making a lasting peace.

    • 10.4: The Russian Revolution

      The collapse of Russia's monarchy in March of 1917 briefly led to a democratic government, but one that was determined to continue the war. When the stalemate persisted and the breakdown in the Russian economy worsened, a new revolution in November of 1917 brought the Bolsheviks to power. The Bolsheviks were communists who sought a dramatic reorganization of Russian society.

    • Unit 10 Assessment

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