No, Orthodox churches are where persons of Greek or Russian Orthodox faith worship. Like the Church of England, the Orthodox also separated from the Roman Catholic Church on matters of doctrine.
The Oriental Church broke away from the Eastern Orthodox Church during the 4th Ecumenical Council in Chalcedon. They differ from the Orthodox Church in that they are Monophysites, meaning they...
Catholics will say that the Orthodox church split from the Catholic Church. Orthodox will say that the Catholic Church split from the Orthodox church. But yes, the two churches did split from one...