Which strategy did the U.S. NOT employ during its efforts at imperialism?

The choice of relying exclusively on diplomatic negotiations stands out as the strategy that the U.S. did not employ during its imperialistic efforts. While diplomacy played a role in certain situations, it was not the sole or predominant approach used by the U.S. in its expansionist policies.

During the period of American imperialism, which peaked in the late 19th and early 20th centuries, military intervention was a prominent tactic. The U.S. engaged in military actions in places like the Philippines and Cuba, showcasing a readiness to use force to support its strategic interests.

Additionally, promoting religious missions abroad has been historically significant as Americans sought to spread Christianity and American values, which often accompanied imperialist endeavors. Moreover, investments in infrastructure within target nations, such as railroads, ports, and telecommunications, were commonly made to secure economic interests and enhance control over those areas.

Diplomatic negotiations were part of the broader strategy, but the U.S. did not rely on them exclusively, as evidence shows that military, religious, and economic actions were equally, if not more, critical in the context of American imperialism.