What adjectives does Dickens use to describe the effects of coal burning?

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity

i am 99% sure that the increase of goods was because of nafta nafta stands for the north american free trade agreement to lift tariffs

your answer for this question would be c