(A) Monroe Doctrine
(B) Roosevelt Corollary
(C) Domino Theory
(D) ** Dollar Diplomacy
EXPLANATIONS BELOW
Concept note-1: -President Taft was more committed to the expansion of U.S. foreign trade than was Roosevelt. He pursued a program, known as “dollar diplomacy, ” designed to encourage U.S. investments in South and Central American, the Caribbean, and the Far East.
Concept note-2: -In what became known as “dollar diplomacy, ” Taft announced his decision to “substitute dollars for bullets” in an effort to use foreign policy to secure markets and opportunities for American businessmen ([link]).
Concept note-3: -Dollar Diplomacy was meant to support the independence of Latin American countries from their European counterparts while also subtly, or blatantly, encouraging countries to take assistance from the United States.