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History of Bulgaria (5285 words) |
 | By the late 9th century Bulgaria extended from the mouth of the Danube to Epirus in the south and Bosnia in the north-west. |
 | Under Peter I and Boris II the country was divided by the egalitarian religious heresy of the Bogomils, and distracted by wars with the Hungarians to the north and the breakaway state of Serbia to the west. |
 | Bulgaria, recuperating from the Balkan Wars, sat out the first year of World War I, but when Germany promised to restore the boundaries of the Treaty of San Stefano, Bulgaria, which had the largest army in the Balkans, declared war on Serbia in October 1915. |
| Tsar (1163 words) |
 | Tsar ( Russian царь ; often spelt Czar or Tzar in English), was the title used for the rulers of Imperial Russia from 1546 to 1917. |
 | Constantine Tikh of Bulgaria ( 1257 - 1277) |
 | Ivan Alexander of Bulgaria ( 1331 - 1371) |