http://www5.csudh.edu/dearhabermas/frrevol01bk.htm
Answer:
D. People consenting to a form of government, which implies that an individual releases some liberty for the common good
This is a bit tricky, but in general, it is climate change that is the source of the greatest disagreement among American politicians, because some people still think it doesn't exist.
The cause of this massive decline in the city's population between 1878 and 1879, where a lot of Memphis residents died or fled the area that the city lost its charter is the Memphis Yellow Fever Epidemic. Around 4,000 white people and about 1,000 African-Americans died during this epidemic.