Answer:
A because most people don't understand people that have a accent or that's from different places. So most likely they use them to communicate with their people
It made things faster, simpler, and better.
(in this context I assume) famine means shortage sooo, I don't really know
Answer:
Mountains, deserts , and rivers.
Explanation:
such as mountains, deserts, rivers, and seas, made travel to and from China challenging. Other Features are Rivers, hills, plains, deserts, plateaus, and the Himalayan mountains.