The sepoy mutiny in india and the boxer rebellion in china were responses to a) mongol invasions b) europian imperialism c) japanese aggressions d) african slave trading

European imperialism ( B )

Explanation:

European imperialism was the projection of European powers to occupy and control lands beyond their bothers and the pioneer of these was the British. the Europeans wanted to create a trading route between  Europe and Asia even Africa and in a way of achieving this they started acquiring new territory in China, Asia and even Africa which were sovereign nations.

European imperialism led to exploitation and exploration of the colonies acquired for selfish reasons especially in Asia and the inhabitants of such regions where not happy and this led to the Sepoy mutiny in India and the boxer rebellion in china

d. migration