Though World War I began in Europe in 1914, the United States did not enter the war until 1917. What was the primary reason for this delay?

Question

Quizplus · Accepted Answer

The United States advocated a policy of isolationism and neutrality until its shipping was directly attacked by Germany. The sinking of RMS Lusitania in 1915 contributed to a shift in public opinion, but it was not until Germany resumed unrestricted submarine warfare in 1917 that the U.S. entered the war.

Though World War I Began in Europe in 1914, the United