English :) hope this helped<span />
You didn't include the map, so I can't be entirely sure, but if it's the same test that I have, it's B.
Answer: A. Build new land
Explanation:Constructive forces are the forces that add new landmass on earth. They are typically formed by events such as volcanic eruptions, sediment deposition, and distortion in the crust.
Paper and printing. Also the compass was a development from the Tang Dynasty as well
