<span>The Ancient Egyptian civilisation owes its growth directly to the Nile river. This is because the Nile deposits silt from the river on the ‘black land’ every year when it floods, making it suitable for agriculture. Otherwise, the only land available is desert.</span>
Really it was troop rebellion as the troops farther from Rome would obey their officers more than head command. The barbarians also where instrumental in the fall of Rome
The movement known as the Enlightenment focused on the idea that problems could be solved using human reason.