Which of the following statements best explains why isolationist sentiment regarding american foreign policy was no longer dominant after world war ii? a. u. s. casualties had been low enough that americans were not reluctant about using military force in the future. b. the united states emerged from the war in direct competition with the soviet union for international influence. c. the united states responded to the discovery of the holocaust by ceding some of its sovereignty to international courts. d. u. s. military leaders believed that they could easily add parts of the defeated countries to a new american empire.