A statement that best investigates the relationship between Social Darwinism and New Imperialism is:
"Social Darwinism, which applied the principles of natural selection to human societies, provided a justification for New Imperialism by framing the expansion of European powers into colonized regions as a 'civilizing' mission, asserting that stronger nations had a right to dominate weaker ones in the name of progress and survival of the fittest."
This highlights how Social Darwinism influenced the ideological underpinnings of imperialist policies, promoting the belief that imperial conquests were both natural and beneficial.