The answer is the Gettysburg address, this is the famous speech starting as, "four score and seven years ago...."
When population grows, so does consumption. When consumption grows, it make more demand to the environment that make the resources consumed
Assuming this involves another form of shifting tectonic plates, the answer would be earthquakes. Another form of the question is asking for continental drift.
France, Spain and Greece are not examples of countries where the North and the South differ greatly: they have all experienced economic problems recently, but this was not specific to the Southern areas of their countries. .
The correct answer is Italy: there is a big difference between the North and the South of Italy, including a cultural difference.
