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:
Cities were at the center of all early civilizations. People from surrounding areas came to cities to live, work, and trade. ... Cities concentrated political, religious, and social institutions that were previously spread across many smaller, separate communities, which contributed to the development of states.
Explanation:
Stated by khan academy
Either 1 or 4 but im leaning towards 1
This was the name given to the breech loading sharps rifles that were supplied to the anti slavery combatants in Kansas.
It led to an intensification of the nuclear arms race.
