How did the united states’ decision to join the allies affect world war i? a. the decision played a minor role because the united states was unable to mobilize troops fast enough to defeat germany. b. the decision played a major role because the united states supplied thousands of men and supplies to aid in the allied victory. c. the decision played a minor role because the united states sent most of its resources to protect its border with mexico. d. the decision played a major role because the united states supplied millions of dollars and political pressure to aid in the allied victory.

The correct answer is B. The American decision to join the Allies played a major role because the United States supplied thousands of men and supplies to aid in the Allied victory.

Explanation:

The United States had declared itself neutral in the face of the European conflict. But it almost abandoned this decision in 1915, when a German submarine sank the Lusitania, an English ocean liner in which more than a thousand people died, many of them US citizens. The people of the USA asked to declare war on Germany, but President Woodrow Wilson only protested. Germany promised not to sink more merchant ships, but since it failed to comply with this agreement, the United States declared war on it in April 1917.

American aid came into play when it was most needed. The Germans, commanded by Generals Von Hindenburg and Erich Ludendorff, disregarding the Russian front, turned most of their troops to the Western front, trying to gain a decisive victory before the American reinforcements arrived. The Central Empires had some victories between March and June 1918, but none was final. In July, when overseas quotas began arriving, luck turned against Germany.  

Entente troops, reinforced with 2.1 million American soldiers, began to press on all fronts. The conquered territories, which had meant so much effort to the Germans, fell one by one into the hands of their adversaries. The countries that supported Germany began to crumble; Bulgaria, Turkey and Austria capitulated. The first days of November, the Germans themselves asked for an armistice. On November 10, Emperor William II of Germany fled to the Netherlands and shortly after abdicated. On November 11, 1918, Germany signed the armistice. With the triumph of the Allied powers, one of the deadliest wars of which history has knowledge is concluded.

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explanation:

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