The Great Schism was between the Roman Catholic Church and the Eastern Orthodox Church (or Catholicism and Eastern Orthodox).
I assume you mean the official split into Eastern Orthodoxy and Roman Catholicism, which happened in 1054.
Christianity split into Catholicism & Orthodoxy.
Roman Catholicism
The Orthodox Church as it is today was established at the Great Schism of 1054, when Christianity split into the East (Eastern Orthodoxy) and the West (Roman Catholicism).
1054
The Eastern Orthodox faith was established in 1054 with the Great Schism. At this time, the East split from the West and established two churches: Eastern Orthodoxy and Roman Catholicism.
The Eastern Orthodox Church split from the Roman Catholic Church in 1054, in an event known as the Great Schism.
The Roman Catholic Church and the Eastern Orthodox Church.
The East-West Schism of 1054 sometimes known as the Schism of the East.
1054 is MLIV in Roman numerals.
In 1054, the Eastern and Western branches of Christianity formally split, leading to the establishment of Catholicism in the West and Orthodoxy in the East. This event is known as the Great Schism.
A:The Roman Catholic Church and the Orthodox faith were formed out of the Great Schism of 1054, although the split was not really regarded as permanent until much later.