New Manifest Destiny and American Expansion
             In the late 19th century and the early 20th century America looked to actively expand its influence overseas to other countries. This period is often referred to as the "New Era of Manifest Destiny" which was greatly spurred by missionaries and business interests. This expansionist foreign policy was also influenced by the belief in Social Darwinism and by certain doctrines of Manifest Destiny. These doctrines included Turner's thesis, The Frontier in American Economy, and a thesis written by Alfred Mahan.
             By the end of the 19th century there was no longer a frontier left in America. Americans had spent much of the mid-1800s exploring the American frontier and expanding American business throughout America to the west. In The Frontier in American Economy, Frederick Turner asked the question, "What can Americans find that will replace the frontier?" He believed that the answer to this was that America must expand its influence to other countries. This thesis would influence America, and other countries would become America's new frontier.
             Another man named Alfred Mahan wrote a thesis in regards to American economic expansion while attending a naval academy. He believed that in order for the US to maintain economic growth, overseas markets would be needed. He felt that the US needed a very strong navy to protect these overseas markets. He thought that it was God's will that all of this be done. Mahan's ideas later turned into the term that was know as military industrial complex, which is basically an overseas economy that is protected by and centered around the navy. As a result of Mahan's thesis, the US eventually becomes dependent on military economy.
             Another idea that emerged during the American expansionist period was Social Darwinism. Social Darwinism revolved around the belief that the stronger races and groups of huma...