Answer:
After the Pax Romana, came a period in which the Roman Empire nearly collapsed under the combined pressures of invasion, civil war, plague, and economic depression.
I am not sure what this question is asking but I think the answer is: There are many things that are made by people and used in the past so it could be numerous objects. So I think that the answer is: Paper(not sure just a guess)
D Larger companies could produce goods at a lower cost. As companies grew they needed a large supply of workers. The immigrants and others moving into large cities supplied the labor the large companies needed.
