This rebellion in china in the early 1900s was a response to imperialism, america’s and other european countries.
a. sepoy rebellion
c. xian hsu rebellion
b. boxer rebellion
d. people’s rebellion

This question is easy; it's just a matter of knowing facts.
The correct answer is b. Boxer Rebellion.

It's not A because sepoys were Indians who served in the British army.

It's not C because...the Xian Hsu Rebellion isn't even a thing.
It might be talking about the Xinhai, but that was when China decided to modernize, which is not a response to imperialism.

It's not D--Firstly, trust what you've heard talked about in school; if you weren't taught it it shouldn't be an answer. I can't find this name used anywhere. It's probably referring to the communist overtaking of China in '49, which is far after imperalism.

He sailed off course on his way back to greenland and ended up in north america