PLEASE HELP ME I NEED IT!!
The Yuan Dynasty was responsible for which of the following:
i. improving the road system
ii. increasing sea trade with India and South East Asia.
iii. extending the canal system
iv. brutal warfare and ruthless killing of people in order to take over China.
a. i & iii
b. ii only d. all of the above
c. iv only
d. all of the above
Please select the best answer from the choices provided A B C D