Eastern Orthodox Christians living in the Ottoman Empire is often called "post-Byzantine". Certain artistic traditions that originated in the Byzantine Empire, particularly in regard to icon painting and church architecture, are maintained in Greece, Serbia, Bulgaria, Macedonia, Russia and other Eastern Orthodox countries to the present day. Catholic art Roman Catholic art consists of all visual works produced in an attempt to illustrate, supplement and portray in tangible form the teachings of the Catholic Church. This includes sculpture, painting, mosaics, metalwork, embroidery and even architecture. Catholic art has played a leading role in the history and development of Western art since at least the 4th century. The principal subject matter of Catholic art has been the life and times of Jesus Christ, along with those of his disciples, the saints, and the events of the Jewish Old Testament. The earliest surviving art works are the painted frescoes on the walls of the catacombs and meeting houses of the persecuted Christians of the Roman Empire. The Christian Church in Rome was influenced by the Roman style of art and the religious Christian artists of the time. The stone sarcophagi of Roman Christians exhibit the earliest surviving carved statuary of Jesus, Mary and other biblical figures. The legalisation of Christianity transformed Catholic art, which adopted richer forms such as mosaics and illuminated manuscripts. The iconoclasm controversy briefly divided the eastern and western churches, after which artistic development progressed in separate directions. Romanesque and Gothic art flowered in the Western Church as the style of painting and statuary moved in an increasingly naturalistic direction. The Protestant Reformation produced new waves of image-destruction, to which the Church responded with the dramatic and emotive Baroque and Rococo styles. In the 19th century the leadership in western art moved away from the Catholic Church which, after embracing historical revivalism was increasingly affected by the modernist movement, a movement that in its "rebellion" against nature, counters the Church's emphasis on nature as a good creation of God. Renaissance artists such as Raphael, Michelangelo, Leonardo da Vinci, Bernini, Botticelli, Fra Angelico, Tintoretto, Caravaggio, and Titian, were among a multitude of innovative virtuosos sponsored by the Church. British art historian Kenneth Clark wrote that Western Europe's first "great age of civilisation" was ready to begin around the year 1000. From 1100, he wrote, monumental abbeys and cathedrals were constructed and decorated with sculptures, hangings, mosaics and works belonging one