Which of the Following Was a Consequence of Race-Based Explanations

Which of the following was a consequence of race-based explanations for expansion by United States leaders?

A) Such explanations led American leaders to study other societies and cultures so that they could create a world community of nations based on mutual respect and cooperation
B) Such explanations led United States policymakers to make unwise concessions to some nations because they were considered to be weak and inferior and in need of aid
C) Such explanations hampered the development of a modern navy because they led United States leaders to believe that God would always protect Americans
D) Such explanations justified domination and war, and thus downplayed the usefulness of diplomacy