A democracy is a political system, or a system of decision-making within an institution, organization, or state, in which members have a share of power. Modern democracies are characterized by two capabilities of their citizens that differentiate them fundamentally from earlier forms of government: to intervene in society and have their sovereign (e.g., their representatives) held accountable to the international laws of other governments of their kind. Democratic government is commonly juxtaposed with oligarchic and monarchic systems, which are ruled by a minority and a sole monarch respectively. Democracy is generally associated with the efforts of the ancient Greeks, whom 18th-century intellectuals such as Montesquieu considered the founders of Western civilization. These individuals attempted to leverage these early democratic experiments into a new template for post-monarchical political organization. The extent to which these 18th-century democratic revivalists succeeded in turning the democratic ideals of the ancient Greeks into the dominant political institution of the next 300 years is hardly debatable, even if the moral justifications...