I think it is agressive, although i have not learned yet about japan. the qin dynasty ruled under legalism, where they were very agressive and had harsh punishments. they had lots of trade so it couldnt be isolationism, im not sure what open door policy is, and they DEFINENTLY were not friendly. In this case I feel like agressive is the best answer.
The anti-imperialists opposed the expansion because they believed imperialism violated the credo of republicanism, especially the need for "consent of the governed".
