Timeline of Christianity By elimbroc 1054 East-West Schism splits Roman Catholic and Greek Orthodox Churches 1095 First Crusade begins 1189 Third Crusade 1204 Constantinople sacked in Fourth Crusade 1205 Saint Francis of Assisi founds Franciscans 1274 Thomas Aquinas writes Summa Theologiae 1291 Last Crusader city (Acre) falls 1321 Dante Alighieri's Divine Comedy completed 1378 Western Schism 1431 Joan of Arc burned at the stake 1453 Turks conquer Constantinople 1455 Gutenberg bible printed 1478 Spanish Inquisition founded 1517 Martin Luther posts 95 Theses 1536 Calvin publishes Institutes 1545 Council of Trent - Counter-reformation 1566 Roman Catholic Catechism published