Central and Eastern Europe around 950 AD

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• NB: borders cannot be known with certainty given lack of clear sources, and in any case they changed constantly.
• However, we do know that Serbia was at a relative zenith after the death of Symeon of Bulgaria (c.927) and Tomislav of Croatia. Caslav of Serbia extended his borders "well into Bosnia". J V A Fine. The Early Medieval Balkans. Pg 159-60.
• "Caslav was able to restore his country, expanding into Pagania and establishing control over the Terbounites and Kanalites". Southeastern Europe in the Early Middle Ages. Florin Curta. Pg 213
• The situation in Slavonia is very difficult to discern; and scholars cannot be certain whether it was controlled by Croats or Magyars. Either way, it was a well populated and productive region.[1] pg 193
• The area of Vidin, Singidunum (Belgrade) and Sirmium (Srem) was ruled by Bulgaria from 9th century until their final defeat by the Byzantines in 1018. Byzantine Military Organization on the Danube, 10th-12th Centuries. A Madgearu (2013) Pg 55-56
• Map of Serbia and surrounds, c. 950 AD, according to Sima Cirkovic The Serbs. Pg 13 [2]
• Map of SEE according to Shepherd's Historcal Atlas c. 1000 AD. [3]