2. The United States adopted a more interventionist foreign policy. In the past, the United States had generally avoided intervening in the affairs of other countries. But World War I showed that the United States could no longer afford to be isolationist. The United States began to take a more active role in international affairs, and it intervened in a number of conflicts around the world.
3. The United States became a leader of the League of Nations. The League of Nations was an international organization that was created after World War I to promote peace and prevent future wars. The United States was one of the founding members of the League of Nations, and it played a leading role in the organization.
4. The United States began to build up its military. The United States emerged from World War I as a major military power, but it quickly began to build up its military even further. The United States wanted to be prepared for future wars, and it also wanted to deter other countries from attacking it.
5. The United States began to develop a more global economy. World War I disrupted the global economy, but it also created new opportunities for American businesses. American businesses began to expand their operations overseas, and the United States became a major player in the global economy.
6. The United States began to take a more active role in human rights. World War I was a time of great suffering, and it led to a renewed interest in human rights. The United States began to take a more active role in promoting human rights around the world.