One of the changes is the jurisdiction of The Orthodox Church. From around 330-1550, Orthodoxy was the predominant religion, followed by Roman Catholicism, with Islam following close behind. After The Protestant Reformation,
Protestants came into the picture and took the lead with The RCC in second, and The Holy Orthodox Church Following close behind.
The Orthodox Church and the Roman Church both have apostolic succession so they are equally old. Anyway at one stage they were one church called the Catholic Orthodox Church or The Universal Truth. The western church (Catholic) wanted to change the creed (a sum of the faith) and started declaring papal supremacy over the other churches - the Orthodox church views the St.Peter on the rock thing a Primacy of Honour not infallibility since Jesus did not make one apostle greater than the other. These were the main events that caused the 1054 schism and creating officially the Catholic and Orthodox Church. However seeing how the Catholic Church changed its teachings,liturgy among other things. The Orthodox Church did not change anything before or after the 1054 schism That is why the Catholic Church views the Orthodox Church as valid, but the Orthodox Church doesn't for the Catholic Church
They are the Greek Orthodox Church, one of the many branches of The Orthodox Church.
There are plenty of places in order for one to find out the information about the Ethiopian Orthodox Church. However, it is strongly suggested that one should check out from the main website of Ethiopian Orthodox Church to have correct information.
Yes, there is an Orthodox Church in Lima, Peru. The main one is the Russian Orthodox Church, which serves the local Orthodox community and conducts services in Spanish and Church Slavonic. Additionally, the Greek Orthodox Church has a presence in the city, catering to its congregation. These churches contribute to the diverse religious landscape of Lima.
You can find information on Christmas that the Orthodox Church celebrates by looking up the name of your local Orthodox Church's website and they will tell you how they celebrate it or simply asking a member of the church.
That's a bit difficult to explain. There was one church called 'The Catholic Orthodox church" it split into Orthodox and Catholic. However there are two Orthodox churches which both preserve the ancient teachings and traditions of the original church. Except have a different view of the divintiy of christ. The Eastern "Oriental' Orthodox church believes that christ has two natures but united while the Eastern Orthodox church believes that chirst has two natures but seperate. However,they both are the original church and have not changed the apostolic traditions. So the Roman Catholic Church and Orthodox Churches are equally old since they were both founded by one of the apostles,however the Orthodox church stayed true to the original churches beliefs and traditions. But they became referred to as "Orthodox" in 451 AD (Eastern "Oriental' Orthodox) and in 1054 (Eastern Orthodox)
One Holy Catholic and Apostolic Church
No the Greek Orthodox Chuch is part of the One Holy Catholic and Apostolic Church.
I don't know what you mean by "ad".I may be wrong, but I believe the Greek Orthodox Church's hierarch is Patriarch Bartholomew of Constantinople, Turkey, who is one of the patriarchs of the broader Orthodox Church.
No, because it is the Orthodox Church that determines correct doctrines, dogmas and teachings. The church fathers were orthodox theologians within the church, and not on their own. This is what distinguishes the Orthodox from other Christian groups, such as the Protestants, where anyone can study theology and call themselves a theologian. This does not exist in Orthodoxy, as theology and the church are one.
The Orthodox Christian Church (also referred to as the Eastern Orthodox Church or Greek Orthodox Church) claims that it began in the year 33 AD, on the Day of Pentecost. At that time, there was no such thing as a Catholic or Orthodox Church, as everyone was part of the One Church. However, in 1054 AD, the West broke away and formed what is now known as the Roman Catholic Church. Following this, numerous Protestant groups were formed in the West, whereas the East remained united and unchanged, as the one Church that continued from 33 AD to the present day.
Generally speaking, no one should ever be denied baptism in an Orthodox Church, as baptism is necessary for salvation.