How and why did America's role in the world change in the 20th century?

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Michelle Winship Year 1

Themes in American History and Culture

Tutor: Dr. C. Kitching

Tuesday 13th May 2003

Essay: How and why did America’s role in the world change in the 20th century?

How and why did America’s role in the world change in the 20th century?

During the 20th century it can be seen that America’s role in the world changed from an isolationist role to one of intervention. The main change can be seen in America’s changing foreign policy. Events that happened in Asia and Europe caused the United States to remake its foreign policy and adapt is role in the world accordingly. It is impossible to assume that America’s role in the world will stay how it is today; the role of the United States in global affairs is still under fire.

America now appears to have abandoned its policy of isolation, and has seen its role in the world change immensely over the past century. The Monroe Doctrine had been set up by US President James Monroe in 1823. The U.S. promised to not intervene in the internal affairs of Europe and in return Europe should not intervene in American affairs.

At the beginning of the 20th century it can be seen that American foreign interests were concentrated on relations with Latin America. After the Treaty of Paris was signed in 1898 America dominated Cuba until US troops left in 1902. The Platt Amendment, authorised America to establish a government that’s was to be run by the people of Cuba. The Roosevelt Corollary was the next step in changing America’s role in the world. The amendment to the Monroe Doctrine allowed the United States to intervene in the internal affairs of a country should it need policing; justifying any American intervention in Latin American affairs. (Boyer, Enduring Vision p.611)

Theodore Roosevelt’s successors encouraged America to change her role even further. President Taft believing America should dominate the western hemisphere; foreign policy during this time was concentrated on advancing US commercial interests abroad. (Boyer, Enduring Vision, p. 652)

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America’s role in the world again came under fire with the events leading up to the First World War.  The rising tensions in Europe caused America to assert its position of neutrality towards international affairs.

The announcement of Germany’s plans for unrestricted war fare jeopardised America’s trade with Allied countries. In response to this threat, President Woodrow Wilson announced the increase of America’s military forces. On Germany’s announcement that they plan to implement a submarine offensive, a large majority of the Senate voted to go to war. During the conduct of the war, the United States avoided creating ...

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