(A) put the domino theory into action
(B) ** created disagreement among citizens about its involvement in the internal affairs of other nations
(C) achieved its long-range foreign policy objectives
(D) demonstrated the strength and success of its military power
EXPLANATIONS BELOW
Concept note-1: -The primary reason the US advocated the Open Door Policy was to protect and broaden US trade with China. This policy was put into effect in the early 20th century after the Boxer Rebellion in China.
Concept note-2: -Which argument was used to support United States acquisition of overseas possessions in the late 1800’s? The United States needed to obtain raw materials and new markets.