A schism within the church in NUMBER@1 A.D. aggravated earlier divisions that emerged at the NUMBER@2 Council of LOCATION@1 and was followed by the Crusades from the west to rescue the east from MISC@1 conquests that had begun to encroach on the MISC@2 .

A schism within the church 's authority in NUMBER@1 was added to the earlier division that had persisted since NUMBER@2 and was followed by Crusades from west to rescue the east from MISC@1 invasion .
