I think the answer would be b
<span>Early European explorers to the Americas likely experienced emotions including awe at the vast "new" environment, amazement at meeting "others," the thrill of the unknown, concern for personal safety, desire for personal reward, and longing for their homeland and those left behind. Written and pictorial records attributed to Europeans provide the bulk of the records of these early travels. Impressions of natives as well as Native impressions of Europeans are frequently framed in the narratives of the explorers. Examination of these records indicates the cautious and curious nature of first encounters.</span>
Change in the family structure, Due to urbanization with families needing money and the woman being expected to stay home and look after the children, started the gender discrimination. Bad working conditions. As more people came to the cities, more people needed jobs. As a result there was an abundant supply of able workers who desperately needed work and so would work for the far less than the bare minimum. Decline in the standard of living, Due to large scale of people moving from the country to the country to the cities, there was a shortage of fresh water....
Theres a lot more like, child labor, unemployment, the division of the classes, pollution, labour unions, overcrowding, etc.
i hope this helps..