What happened after wu di expanded china’s empire over a larger territory? a-new ways of governing were needed. b-the people migrated to other lands. c-the amount of trade dropped dramatically. d-new schools were created to train scholars.

The question is asking to choose among the following choices that states what happened after wu di expanded china's empire and base on my research,  I would say that its letter C. the amount of trade dropped dramatically. I hope you are satisfied with my answer and feel free to ask for more 

The answer is A-new ways of governing were needed. Just took the test.