Pacifism: A significant number of Americans were opposed to war on moral grounds. They believed that violence was never justified and that disputes should be resolved through peaceful means.
Economic interests: The United States had significant economic ties to both the Allied Powers and the Central Powers. Business leaders and investors feared that taking sides in the war would damage these relationships and harm the American economy.
Lack of a clear threat: In the early years of the war, many Americans did not perceive an immediate threat to their own nation. They saw the conflict as a distant European affair that did not directly affect their interests.
Political division: The United States was divided in its support for the Allied Powers and the Central Powers. Some politicians and public figures favored joining the war on one side or the other, while others argued for neutrality. This political division made it difficult to build a consensus for intervention.