Ecumenical Councils in Turkey
The Judaistic roots of Christianity developed in the world of Greco-Roman pagan cults. It is began as an obscure sect in Judea.
Christianity followed its natural path and then the various sorts of local Christianity were formed. Some of them are Donatists, Novatians, Marcionites, Docetists, Montanists and Arians. Not all of these became widespread. Some of them disappeared and heresies shook the roots of Christianity. Then the things got complicated because of the addition of the third element, the Holy Spirit.
We know there were seven Ecumenical Councils before the disagreements between Western and Eastern Christians. Western Christians are known as Latin and eastern Christians are known as Greek. They prevented the holding of councils recognized by the whole Church.
The main topic of the councils was to answer the questions. The questions were about the Holy Spirit, the Person of Jesus or the dogma against heretical views.
There were regulations about Church discipline, in addition to such major questions. Apart from these Ecumenical Councils, there were some of them. These are regarded by the Roman Church as ecumenical. Because the Roman Church believes that it is the one legitimate Christian communion in the whole world.