Investors came to the South for cheap labor and low taxes, so they made few capital investments in the region.
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Enlightenment philosophers John Locke, Charles Montesquieu, and Jean-Jacques Rousseau all developed theories of government in which some or even all the people would govern. These thinkers had a profound effect on the American and French revolutions and the democratic governments that they produced. This may help u ;)
The Caucasus Mountains lay between the Black Sea and the Caspian Sea. By the 639, the Arabs invaded the region of what today is known as Azerbaijan and Dagestan (Russia). The Caucasus served as a border between the Muslim Empire and the Turkic Khazar Empire.