East Syriac Rite

The East Syriac Rite, or the East Syrian Rite (and also known as the Assyrian Rite, Edessan Rite, Persian Rite, Nestorian Rite, Chaldean Rite, Babylonian Rite, or Syro-Oriental Rite) is a Christian rite that was traditionally practiced by the Church of the East and remains in use by its descendants. It is one of two Syriac rites, the other being the West Syriac Rite. 

Thomas the Apostle established Christianity in Mesopotamia, Assyria, and Persia, when he travelled to India. The First Council of Ephesus in 431, said that the ideas and teachings of Nestorius were false. These teachings are commonly known as Nestorianism. The Church of Seleucia-Ctesiphon did not share this opinion, and split from the other churches. The church was very successful, and quickly spread. The conquest of Tamerlane in the 15th century  almost destroyed the church, and reduced itto a few communities. Differences in opinion resulted in the current situation. 

 Usage 
The East Syriac Rite is currently used, in different ways, by churches that descend from the Church of the East:

 Assyrian Church of the East in Iraq
 Chaldean Syrian Church in India, archbishopric of the ACOE
 Ancient Church of the East in Iraq, autocephalous church that split in 1964
 Chaldean Catholic Church based in Baghdad
 Syro-Malabar Catholic Church based in India

Of these churches, the Chaldean and Syro-Malabar Catholic Churches are in full communion with Rome. All churches use the Syriac language (specifically the Eastern dialects) in their liturgy.

 References 

Category:Eastern Christian denominations