United States isolationism
Isolationism is a description of a nation's foreign policy that restricts interactions with other countries including limited treaties, alliances, and financial arrangements (loans either direction), with the intent to remain independent.
 United States
The United States was under a policy of isolationism from the founding of the republic until its entrance into the First World War. In this context, term describes the American foreign policy of hegemony over the Western Hemishere and insular Pacific while avoiding involvement in the European great power politics. While hardly isolation as such, describing the policy as "non-interventionism" would be even more inaccurate given the frequency of U.S. military intervention across Latin America in the nineteenth century.
John Mearsheimer notes that the United States is the only modern state to have ever achieved such regional hegemony.