Let’s start out with a review of Christianity to Emperor Constantine. Christianity from Judaism to Constantine:Crash Course World History...

1309 - 1417 - Competing Popes So we have had a break between the two sectors of Christendom - east and west - Christian against...

From world history.org: The Fourth Crusade (1202-1204 CE) was called by Pope Innocent III (r. 1198-1216 CE) to retake Jerusalem from its...