Compare and contrast American foreign policy during the 19th century (expansion, manifest destiny, imperialism, Open Door) with that of the 20th century ( internationalism, isolationism, containment, intervention).

Compare and contrast American foreign policy during the 19th century (expansion, manifest destiny, imperialism, Open Door) with that of the 20th century ( internationalism, isolationism, containment, intervention). Use specific examples to illustrate your answer.