Your answer would be C. ☺♥
Answer: factories mass produced goods creating surpluses that governments could not control
Answer:
"Even today, the need for work is a common reason people move to urban areas."
This sentence, although not inaccurate, is not necessary in order for the rest of the paragraph to be coherent. The sentence states that nowadays, people continue to move for work. However, the passage is not a comparison between the past and the present. It simply wants to inform us of the changes that led to bigger cities. Therefore, you can remove this sentence without seriously altering the author's explanation.
The OPEC oil embargo was an event where the 12 countries that made up OPEC stopped selling oil to the United States. In response to the oil crisis, the United States took steps to become increasingly energy independent.
Answer:
A. North and South piglet