History of Medicine By Tlady Period: 500 to Dec 31, 1300 Middle Ages 900 Rhazes Discovered the difference between smallpox and measles Period: Jan 1, 1301 to Dec 31, 1700 Renaissance Period: Jan 1, 1701 to Dec 31, 1899 Industrial Revolution Period: Jan 1, 1900 to Dec 31, 1999 Modern World Period: Jan 1, 2000 to Sep 5, 2019 21st Century
