Answer:
The amount of energy it takes on peoples labor to physically carry water back to their village and worrying about evaportation in hot weather which makes water transportation party weather dependant.
Looking for a clean source of water in the first place is also a tough one.
Explanation:
Han is your answer. it will come up Ming Dynasty ask another word for Ming Dynasty and then it will tell you your answer is Han.
I believe this was the Republic of Turkey.
1 million workers accounts for nearly 20 percents of all injuries and illnesses in the workplace