U.S.A, the “civilizing mission”

        Analyze the idea of the “civilizing mission” or Manifest Destiny? By the late 19th century, the U.S. joined other European powers in constructing an empire. The question is this: what were the primary motivations and factors that led to the U.S. shift from isolationism and continental expansion to imperialism by the late 19th and early 20th centuries?