Table : > CHAPTER CHRONOLOGY
1050–13001215
Steady rise in population; period of milder climate Fourth Lateran Council orders Jews and Muslims to wear distinctive clothing
ca. 11001225–1274
Merchant guilds become rich and powerful in many cities; artisans begin to found craft guilds Life of Thomas Aquinas; Summa Theologica
1100–13001241
Height of construction of cathedrals in Europe Contract between Lübeck and Hamburg, first in the Hanseatic League
1100sca. 1300
Hospitals and other homes for the sick begin appearing Bill of exchange becomes most common method of commercial payment in western Europe
1160s1300s
Silver mines opened in Germany, allowing for more coinage– Clocks in general use throughout Europe
ca. 1200
Founding of first universities