The United States had an underdeveloped army and navy when World War I started, leaving them unprepared to wage a war, which compelled some Americans to join the:
Explanation
Answer: E - In 1914, Americans who believed their ill-equipped nation’s involvement in World War I was inevitable joined the Preparedness Movement, which was a civilian effort to ready U.S. forces for armed conflict. The movement was led by Leonard Wood (a former Army Chief of Staff), former President Theodore Roosevelt, and several other prominent, elite Americans. The movement focused on military reserve training and drumming up public awareness to compel government action. The public cause dissipated in 1916, when the U.S. government started investing in military preparation, but the ideological aspect of the movement (which resided with its leadership) continued to influence defense and foreign affairs policymaking.