An open textbook, displaying page 12, rests on a flat, dark surface in an indoor setting within the city of Svilengrad, Bulgaria

An open textbook, displaying page 12, rests on a flat, dark surface in an indoor setting within the city of Svilengrad, Bulgaria. The page features text in Bulgarian Cyrillic and a prominent black and white historical photograph. The photograph depicts two individuals: a male standing behind and slightly to the left of a seated female. The male wears a dark military uniform adorned with epaulets and medals, and has a mustache. The female is dressed in an ornate, light-colored gown with a long, draped veil or headdress and discernible jewelry, including a necklace and brooch; her hands are clasped. To the left of the photographed figures, a classical architectural element with the inscription "JULIETTA" is visible. To the figures' right, a large arrangement of foliage, possibly flowers or greenery, is present. Text on the page, partially obscured by a diagonal shadow, references "Александър I Кара...вич (1888 – 1934) крал на Юго...", identifying the subjects in the photograph as likely King Alexander I and Queen Marie of Yugoslavia. The background surrounding the book is dark and blurred.