What underlying ideology influenced many U.S. foreign policy decisions during the age of imperialism?

The ideology that greatly influenced U.S. foreign policy decisions during the age of imperialism was characterized by nationalism and a prevailing belief in American superiority. This mindset was rooted in the idea that the United States had a mission to spread its values, culture, and political systems, which were often regarded as more advanced than those of other nations. This belief in exceptionalism justified expansionist policies, and it fueled actions such as the acquisition of territories through war, negotiation, and other means.

Nationalism played a significant role in rallying public support for imperialistic ventures. The perception that the U.S. was destined to expand its influence and territory was fueled by notions like Manifest Destiny, which initially applied to westward expansion but later broadened to include foreign territories. This created a sense of duty among Americans to bring their way of life to others, contributing to a belief in American superiority that guided various foreign policy decisions, including interventions in Latin America, the Philippines, and other regions.

In contrast, the other ideologies presented do not encapsulate the sentiments that drove U.S. actions during this era. Isolationism emphasizes a withdrawal from international engagement, which conflicts with the aggressive expansionism seen during imperialism. Economic expansion through trade, while important, does not