Answer:
Option: c. Sewer
Explanation:
Sewer plays a key role in collecting wastewater from human populations more effectively than in the past. Before, the emergence of cities, there was no proper procedure to collect the wastewater in America, which ultimately affected the environment and underground water. As cities began to take shape in America with a larger population, the sewage system came in the late 1850s in Chicago and Brooklyn.
Answer:
Japan launched a surprise attack against the Russian-held Port Arthur, along the coast of Manchuria
Explanation:
That caused the Russo- Japanese War
Oracle Bones, Daoism and Mandate of Heaven are all associated with the ancient civilization of China.
Oracle Bones were used for prefiguring one's future
Daoism is a Chinese religion and philosophy
Madate of Heaven was a belief that permission for the emperors to rule was a god's will (comes from heaven)
