Republic is defined as "a government having a chief of state who is not a monarch and who in modern times is usually a president", "a political unit (such as a nation) having such a form of government", or "a government in which supreme power resides in a body of citizens entitled to vote and is exercised by elected officers and representatives responsible to them and governing according to law" (Merriam-Webster). Examples of this type of government can be seen in the United States of America, Argentina, Brazil, Chili, and the Republic of the Congo.
Modern political philosophy emerged, along with the rise of modernity, out of medieval feudalism. Delve into the history of politics leading up to 16th-century Europe, including the development of ancient political organization, the ideas of Plato and Aristotle - the first Western political theorists - and the contributions of medieval philosophy, such as the notion of "just war."
Source: Kanopy