Answer:
air pollution from more and more factories and the factories put chemicals into the water source
Explanation:
Answer: sending slaves to a colony on the west coast of Africa.
Explanation: Hope that helped
It was : B-refining oil Back then, standard oil managed to gain monopoly within the oil industry by buying all of the existing rival refineries and united it under the standard oil brand. This allow them to dominate the whole oil product that distributed in united states