How Did Late Nineteenth-Century Imperialism Differ from Earlier Forms of European

How did late nineteenth-century imperialism differ from earlier forms of European and American colonialism?

A) Imperialism placed greater emphasis on "civilizing" nonwhites and non-white Christians.
B) Imperialism relied little on settlers moving to these new colonial holdings.
C) Imperialists had little interest in exploiting the natural resources of their new holdings.
D) People colonized by imperialism were happier than under earlier forms of colonialism.