The Classical Period represented a consolidation of the basic elements of human civilization, thus overcoming our ancient nomadic lifestyle of hunting and gathering. The stablishment of ancient civilizations meant having the means to maintain a sedentary lifestlye, starting with agriculture and cattle raising. Then as cities grew more complex concepts became of everyday use, such as economy or religion.
The Classical Empires, such as Egypt, Mesopotamia, Persia, the Greek city-states, Carthage and Rome, expanded not only military power but economic growth, religion, language, the development of arts, technology and philosophy. These concepts started thousands of years ago, and became widespread because of the prosperity that sedentary lifestyle allowed in these empires, each one making its particular contribution to humanity.
They could get more done which benefited them in the long run
it was marked by a great degree of cooperation and was essential to securing the defeat of Nazi Germany
The purpose of dividing the government into 3 different branches was that so one entity did not have all the power. So they basically did it to divide the power.
The key ideas of "The Prince" were about power and how leaders specifically princes could seek to gain power and also how they could go about maintaining power. These ideas helped to influence European rulers and individuals around the world by promoting this particular type of leadership and power seeking.