(A) ** imperialism
(B) expansionism
(C) isolationism
(D) Protectorate
EXPLANATIONS BELOW
Concept note-1: -Imperialism occurs when a strong nation takes over a weaker nation or region and dominates its economic, political, and cultural life. These new areas or weaker regions were called Colonies.
Concept note-2: -Imperialism is the state policy, practice, or advocacy of extending power and dominion, especially by direct territorial acquisition or by gaining political and economic control of other territories and peoples.
Concept note-3: -The consequences of economic imperialism on West Africa have included exploitative resource extraction, proxy and resource influenced civil wars, illegal trade in natural resources, mass poverty, and external migration of skilled workers necessary for national development.
Concept note-4: -Imperialism-the policy in which stronger nations extend their economic, political, and/or military control over weaker territories.