The role of the Haemus Mountains (that is Stara Planina and Sredna Gora) as a geographical factor is visible in the fact that between the close of the 7th century and the beginning of the 9th century. the eastern parts of that massif turned naturally into a political border between Bulgaria and Byzantium. Although in later times this border moved further to the south. even for longer ... https://myjapanesehomers.shop/product-category/canvas-picture/