Pannonia, Byzantine Empire
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The Pannonia was a Byzantine province, which existed in present-day Syrmia region of Serbia in the 6th century. Its capital was Sirmium (today Sremska Mitrovica).
The Pannonia was a Byzantine province, which existed in present-day Syrmia region of Serbia in the 6th century. Its capital was Sirmium (today Sremska Mitrovica).