2025 civics test · Question 101 of 128 · Recent American History and Other Important Historical Information
Why did the United States enter World War I?
In Chinese 美国为什么参加第一次世界大战？
Official answers
- Because Germany attacked U.S. (civilian) ships因为德国袭击了美国（民用）船只
- To support the Allied Powers (England, France, Italy, and Russia)为了支持协约国（英国、法国、意大利和俄国）
- To oppose the Central Powers (Germany, Austria-Hungary, the Ottoman Empire, and Bulgaria)为了对抗同盟国（德国、奥匈帝国、奥斯曼帝国和保加利亚）
Any one of these answers is accepted unless the question asks for more than one.
Why this is the answer
World War I began in Europe in 1914, and the United States stayed neutral at first. Germany's submarines attacked ships, including ships carrying American civilians, which turned U.S. opinion against Germany. In 1917 the United States entered the war on the side of the Allied Powers (England, France, Italy, and Russia) against the Central Powers (Germany, Austria-Hungary, the Ottoman Empire, and Bulgaria). Any of the three listed reasons is correct.