American imperialism is a system of imperialism and global finance capital enforced by the Deep State of the United States. While small-case instances were practiced prior through banana republics, it began to become mainstream following the Second World War and became the dominant force in the world after the Cold War. Since 2020, American imperialism has been waning due to internal and external challenges.
The most infamous cases of American imperialism come from the recent War on Islam, justified by "counterterrorism," and contemporary escalations against Russia and China.