History of the foreign policy of the United States
The major themes in the history of the United States foreign policy since the American Revolution are: becoming an "Empire of Liberty", promoting democracy, expanding across the continent, supporting liberal internationalism, contesting World Wars and the Cold War, fighting international terrorism, developing the Third World, and building a strong world economy with low tariffs (but high tariffs in 1861–1933). == New nation: 1776–1801 == === Revolution and Confederation === From the establishment of the United States after regional, not global, focus, but with the long-term ideal of creating what Jefferson called an "Empire of Liberty".
Source: Wikipedia — History of the foreign policy of the United States (CC BY-SA 4.0)