#historic_period  an era of history having some distinctive feature
  supertype:  #era  a period marked by distinctive character or reckoned from a fixed point or event
  instance:  #Renaissance  #Reign_of_Terror
  part of:  #history
  subtype:  #antiquity.historic_period  the historic period preceding the Middle Ages in Europe
  subtype:  #middle_ages__dark_ages  the period of history between classical antiquity and the Italian Renaissance
  subtype:  #industrial_revolution__technological_revolution__technologicalrevolution  the transformation from an agricultural to an industrial nation
  subtype:  #reign.historic_period  the period during which a monarch is sovereign; "during the reign of Henry VIII"
  subtype:  #turn_of_the_century  the period from about 1890 to 1910
  subtype:  #New_Deal.historic_period__newdeal  the historic period (1933-1940) in the U.S. during which President Franklin Roosevelt's economic policies were implemented
  subtype:  #Reconstruction  the period after the United States Civil War when the southern states were reorganized and reintegrated into the Union; 1865-1877
  subtype:  #Restoration.historic_period__restoration  the reign of Charles II in England; 1660-1685

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