Original sentence: Boswell gives text and translation for a number of versions of the "fraternization" ceremony in Greek, and translation only for a number of Slavonic versions.The ceremony was mainly practised in Eastern Christianity
Edited sentence: The ceremony was mainly practised by the early Eastern rites of the  Catholic Church, and later the Eastern Orthodox Church, which formed in 1054 A.after separating from Roman Catholicism- Boswell gives text and translation for a number of versions of the "fraternization" ceremony in Greek, and translation only for a number of Slavonic versions