This is a Russian Forum and nobody knows about the Russian Orthodox Church! The Orthodox Churches all over the world have been venerating Mary (and saints) since the time of the earliest Christians. Greek, Serb, Armenian, Georgian, Russian and Antiochian Orthodox Churches all display icons of Mary and include her veneration (not worship) in their litergies. The Coptic Church of Egypt also venerates Mary.

DDT, your lack of knowledge of the history of Christianity is surprising considering your apparent personal interest in it. Constantine did not start the Roman Catholic Church and he did not put it's headquarters in Rome. In 324 he moved the capital of the Roman Empire east from Italy to the site of the Greek city of Byzantium and built a new city, Constantinople. This caused a lot of distress and loss of power to the bishop of Rome who now had to deal with a ruler that was not only Christian but living in the lap of the Eastern Orthodox bishops, who had his ear. At the Council of Constantinople in 381 the bishop of the Eastern capitol was given primacy of honor after the bishop of Rome which further tweaked the bishop of Rome who rejected this canon. Because as far back as 254-7 the bishop of Rome (Pope Stephen I) had expressed the belief that the bishop of Rome should be the absolute head of the Christian Church.