(A) ** Imperialism
(B) Defense
(C) Free Market
(D) Nationalism
EXPLANATIONS BELOW
Concept note-1: -What is imperialism in history? 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-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: -Imperialism is the ideology and policy of extending the rule or authority of a country over that of another and its people either through military, economic or political means.
Concept note-4: -European imperialism refers to the process of European nations building overseas empires outside of Europe. This process began with the first voyage of Columbus in 1492 and ended in the middle of the 20th century with the process of decolonization.