BULGARIA MARKS 1155 YEARS SINCE ADOPTION OF CHRISTIANITY AS OFFICIAL RELIGION BY FIRST BULGARIAN EMPIRE http://archaeologyinbulgaria.com/202...P1cvRrRVd6IFh4

The Baptism of the Bulgarians, a miniature from the Manasses Chronicle (a 14th century translation in Old Bulgarian of a chronicle by 12th century Byzantine historian Constantine Manasses). Photo via Wikipedia