(A) ** sphere of influence
(B) Pan-Americanism
(C) protectorate
(D) dollar diplomacy
EXPLANATIONS BELOW
Concept note-1: -Each leasehold became the center of a country’s sphere of influence, an area where a foreign nation controlled economic development.
Concept note-2: -Imperialism. Imperialism occurs when a strong nation takes over a weaker nation or region and dominates its economic, political, or cultural life. This type of foreign policy was practiced by European nations and Japan throughout the 1800s and early 1900s.
Concept note-3: -A sphere of influence is an area in which an individual or organization can exert power or control. For example, a company’s sphere of influence may include its employees, customers, shareholders, and the general public.
Concept note-4: -In the field of international relations, a sphere of influence (SOI) is a spatial region or concept division over which a state or organization has a level of cultural, economic, military or political exclusivity.
Concept note-5: -In the aftermath of World War II, the Soviet Union created a sphere of influence as a political fact in the territories of the nations of eastern Europe.