Answer: The United States had a divine destiny to dominate the affairs of the Western Hemisphere.
During the 19th century, the doctrine of "Manifest Destiny" became popular in American politics. The doctrine embodied a widely held belief that American settlers were destined to expand all across North America.
Americans believed this to be true because they thought their people had particularly virtuous qualities and institutions. Although the doctrine was very popular and provided some justification for American imperialism, it was far from universal.