The Chola kingdom 1) Constructed a government with tight centralized authority;
2) Owed its origin to the sultan of Deihi;
3) Created Junks for international trade.
4) Was more interested in profitable trade in the Indian Ocean Basin:

not sure but thinking i'ts cause the government was broke. not sure

most camps were located in the area of the general government in occupied poland

a. poison gas was sprayed over battlefields by airplanes to weaken enemy positions before major attacks.