4. What realities caused concern about the strength of the US in relation to foreign countries?

international affairs and the country's overall relationship to the rest of the world, dimension concerns the balance in U.S. foreign policy between the use of, The end of the Cold War led to a diminution in the ideological debate, financial strength, military power, technology, and capacity for innovation

b or c ( this is because my answer is short so just ignore it)

your answer would be (b)