Ancient Rome/The Roman Empire/The Middle Ages By Dogem 476 Roman Empire Colapse Jan 1, 768 Reign of Charlemagne King of the Franks Jan 1, 1000 High Middle Ages Began Nov 27, 1095 Pope Urban called for the First Crusade Jul 15, 1099 Jerusalem Captured in the First Crusade Jan 1, 1145 End of Second Crusade in defeat Jan 1, 1164 Constitution of Clarendon Jan 1, 1192 Peace Treaty signed to end 3rd Crusade Jun 15, 1215 Magna Carta Signed Jan 1, 1258 Destruction of Baghdad Nov 13, 1295 Model Parliament Established Jan 1, 1337 The Hundred Years War Jan 1, 1346 Bubonic Plague May 29, 1453 Fall of Constantinople Feb 13, 1668 Independence of Portugal