13th century

The 13th century consists of the years 1101-1200 AD.

Events

 * The Roman Catholic Church begins to codify canon law.

Ecumenical councils

 * '''1215. Fourth Lateran Council deals with transubstantiation, papal primacy and conduct of clergy. The council required Jews and Muslims should wear a special dress to enable them to be distinguished from Christians.
 * '''1245. First Council of Lyons mandates the red hat for cardinals, and a levy for the Holy Land.
 * '''1245. Second Council of Lyons attempts reunion with the Eastern churches. The council also approves Franciscan and Dominican Orders, calls for a tithe to support the crusades, and establishes conclave procedure.

Timeline
12th century | 13th century | 14th century .