Medical Investigations 1 By tlady1 Period: 500 to Sep 4, 2015 History of Medicine Period: 500 to Dec 31, 1500 Middle Ages Period: Jan 1, 1300 to Dec 31, 1599 Renaissance Period: Jan 1, 1600 to Dec 31, 1899 Industrial Revolution Period: Jan 1, 1900 to Sep 4, 2015 Modern World Mar 2, 2022 Rhazes discovered difference between smallpox and measles