La Bulgarie sour le règne de Siméon.
Own work: voir Image:Bulgaria-(893-927)-TsarSimeon-byTodorBozhinov.png
This map is based on maps 

"Territorial expansion of Bulgaria during the IX Century (814-893 AD)"
"The Wars of King Simeon (893-927 AD)",from "Bulgarian Military Atlas", Military Publishers, Sofia, 1979, pp. 152-153; and the map 

"Bulgaria at the end of IX Century and the beginning of X Century", from "History of Bulgaria. Vol. 2: First Bulgarian State", BAS Publishers, Sofia, 1981, pp. 292-293
user:Aliesin