2. The United States' concern about the spread of German militarism. Germany's aggressive military policies, such as its invasion of Belgium and France, alarmed the United States. Many Americans feared that Germany would eventually turn its attention to the Western Hemisphere, and they wanted to stop Germany before it became too powerful.
3. The United States' sympathy for the Allies. The United States had close cultural and economic ties to Britain and France. It was natural that many Americans would sympathize with the Allies, who were fighting for their survival against Germany.
4. The United States' desire to make the world safe for democracy. President Woodrow Wilson believed that the United States should enter the war to help make the world safe for democracy. He argued that Germany's victory would lead to a world dominated by authoritarian regimes, while a victory for the Allies would lead to a more democratic and peaceful world.