Final answer:
American expansionism was encouraged by strengthening the American presence abroad. This was done through different means, including diplomacy, economic influence, or military power and often led to the establishment of more control on foreign soils, as seen in the late 19th-century Spanish-American War.
Step-by-step explanation:
The question refers to a period of American expansionism, during which the United States sought to increase its influence and control internationally. This could be related to specific doctrines, like the Monroe Doctrine or the Roosevelt Corollary, which directed the country's approach to international relations. These doctrines were often implemented by increasing American presence abroad, using different means such as diplomacy, economic influence or military power. This strengthening of influence abroad often directly led to encouraging expansionism as it established more control for USA on foreign soils. An example of this is the Spanish-American War at the end of the 19th century that significantly expanded American territories and spheres of influence.
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