Answer: A. Increasingly crowded urban areas
Explanation: Think about it this way. If you heard about more products being made in a city that means what? More jobs! Many people moved to cities and then made the cities unsanitary and many diseases spread around such as hepatitis. Anyways the more jobs there was the more money people could make and the more people lived in big cities like New York.
D. Exfoliation is the answer
Answer:
Andorra.
Explanation:
The French president is considered one of the princes of Andorra. This started way earlier in the 21st century during the medieval era; and continued till today by the the land locked Andorra between Spain and France. The other prince here is the bishop of Urgell.