Supporters of the war
* Belief that the United States had a moral obligation to fight against German militarism. Many Americans believed that Germany was a threat to world peace and that the United States had a duty to help stop its aggression.
* Economic interests. Some Americans believed that the war would benefit the United States economically, for example by increasing trade and creating new jobs.
* Patriotism. Many Americans simply felt a sense of duty to their country and wanted to support it in time of war.
Opponents of the war
* Belief that the war was not in the best interests of the United States. Some Americans believed that the United States should not get involved in a European conflict and that it should focus on its own domestic affairs.
* Concerns about civil liberties. Some Americans worried that the war would lead to a suppression of civil liberties and a rise in authoritarianism.
* Pacifism. Some Americans believed that war is always wrong and that the United States should never use military force.
Ultimately, the decision to enter World War I was a complex one that was influenced by a variety of factors. There was no single reason why some Americans supported the war while others opposed it.