景教
After the schism of 1552, the Church of the East declined, and throughout the following centuries, the Church of the East was affected by several internal schisms. The non-Catholic branches of the Church of the East managed to survive a tumultuous period and eventually consolidate during the 19th century in the form of the Assyrian Church of the East and the Ancient Church of the East. While the pro-Catholic faction consolidated into the Chaldean Catholic Church. A minority faction within the Syro-Malabar Church split off and joined in communion with the Assyrian Church of the East during the 1870s, to form the Chaldean Syrian Church which employs the traditional East Syriac Rite of the historic Church of the East.