Historical regions (or historical areas) are geographical regions that had a cultural, ethnic, linguistic or political significance as distinct entities at some point in recorded history, regardless of latter-day borders and administrative divisions. There are some historical regions that can be considered as "active", for example: Moravia, which is held by the Czech Republic, is both a recognized contemporary region of the country as well as a historical one. They are used as delimitations for studying and analysing social development of period-specific cultures without any reference to contemporary political, economic or social organisations.
Definitions of regions vary, and regions can include macroregions such as Europe, territories of traditional sovereign states or smaller microregional areas. Geographic proximity is generally the required precondition for the emergence of a regional identity. In Europe, regional identities are often derived from the Migration Period but for the contemporary era are also often related to the territorial transformations that followed World War I and those that followed the Cold War.