The great schism is known for being a split between what two churches A. The Catholics and the Shia
B. the Muslims and the Christians
C. The orthodox and the Catholics
D. The Sunnis and the Shia

C. The Orthodox and the Catholics

Explanation:

During the 11th century, the two ideologies of Christianity separated. This event is called The Great Schism or East-West Schism. The Greek Eastern ideas transformed into the Eastern Orthodox Church, while the Latin West became the Roman Catholic Church.

It is derived from long-term divisions, both cultural, linguistic, and social. Some of the main points of the dispute were:

the procession of Holy Spirit – this was the biggest division, as it comes from the understanding of the faith and dogmas. While Eastern Christianity believes that the Father is the one from whom the Son is born and Spirit proceeded, the Latin Churches started teaching that the Holy Spirit proceeds both from father and the Son (Filioque)the bread used during the Eucharist – the west thought it acceptable to sued unleavened for the communion sacrament, while the eastern did not. Universal jurisdiction of the Bishop of Rome – Rome believed in the overall authority of the pope, while the eastern church did not think there should be the authority over patriarch.Celibacy of the clerics – the western church supports the belief that the celibacy of the clerics Is mandatory, while the east found it norm only for the bishops, and not for the priesthood.