Answer:
C. Venezuela
Step-by-step explanation:
The United States realized its position as a superpower (having a dominant economy and influence) around the 1890s.
Simultaneously, Great Britian and Venezuela were having a spat (a decade long by that point) over boundaries, in which Venezuela asked U.S. for assistance several times over that decade +. The U.S. basically offered condolences and didn't do much else-wise until around 1895 (if I remember correctly) and told Britain to knock it off through the use of Monroe Doctrine, which basically was an opposition to Europe forcing its will on American relations. Britain argued it had no international influence and it only pertained to domestic-related issues between America and Europe.
. . .The U.S. wasn't having that.
The answer, in short, is C: Venezuela.