The nations of the world that were formerly victims of imperialism and did not align themselves with either the West or the Communist powers are today called what?

A. first world countries
B. second world countries
C. underdeveloped nations
D. developing nations

Underdeveloped nations

The nations that were formerly victims of imperialism and did not align themselves with either the West or the Communist powers are today called developing nations. This term is typically used to describe countries that are still in the process of economic and social development, and face various challenges such as poverty, limited access to education and healthcare, and infrastructure deficits.

To answer this question, one can eliminate options A and B as they refer to the terms used during the Cold War era, which classified countries based on their political affiliation. The term "first world countries" referred to the industrialized and capitalist nations aligned with the West, while "second world countries" referred to the communist or socialist nations aligned with the Soviet Union.

Option C, "underdeveloped nations," was a commonly used term in the past to describe countries with low levels of economic development. However, this term is now considered outdated and sometimes considered derogatory, as it implies a lack of progress or inferiority.

Therefore, the correct answer is D: developing nations, which is the current term used to describe countries that are still in the process of development and face socio-economic challenges.