Eastern Christianity comprises Christian traditions and church families that originally developed during classical and late antiquity in Western Asia, Northeast Africa, Eastern Europe, Southeastern Europe, Asia Minor, the Malabar coast of South Asia, and parts of the Far East. The term does not describe a single communion or religious denomination.
Just like Judaism and Islam, Christianity is an Abrahamic religion. Christianity started out as a Jewish sect in the eastern Mediterranean. It quickly grew in number of believers and influence over a few decades, and by the 4th Century it had become the dominant religion in the Roman Empire.
Christianity in Africa arrived in Egypt in the middle of the 1st century. By the end of the 2nd century it had reached the region around Carthage.In the 4th century, the Aksumite empire in modern-day Eritrea and Ethiopia became one of the first regions in the world to adopt Christianity as an official religion and the Nubian kingdoms of Nobatia, Makuria and Alodia followed two centuries later.