List of heads of state 837
Overview
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Africa
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Aghlabids
- Emir : Ziyādat Allaah I (817-838)
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Idrisids in Morocco
- Imam : Ali I. Haydara ibn Muhammad (836-849)
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Rustamids
- Imam : Aflah ibn 'Abd al-Wahhab (824-872)
Asia
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China
- Emperor : Tang Wenzong (826-840)
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India
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Eastern Chalukya
- King : Vijayaditya II (808–847)
- Pala
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Pallava
- King : Nandi Varman III. (825-850)
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Pandya
- King : Sirmara Srivallabha (830–862)
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Pratihara
- King : Samrat Mihir Bhoja Mahan (836-885)
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Rashtrakuta
- King : Amoghavarsha I (814–878)
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Eastern Chalukya
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Khmer
- King : Jayavarman II (802-850)
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Caliphate of the Muslims
- Caliph : al-Mu'tasim bi-'llāh (833-842)
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Nanzhao
- King : Meng Quanfengyou (823–859)
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Tibet
- King : Lang Darma (836–842)
Europe
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Bulgaria
- Khan : Presian I. (836-852)
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Byzantine Empire
- Emperor : Theophilos (829-842)
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England ( heptarchy )
- East Anglia
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Essex
- King : Sigeric II. (825–840)
- Mercia
- Northumbria
- Wessex
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Frankish Empire
- King: Louis the Pious (814–840)
- Maine
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Toulouse county
- Count : Bernhard of Septimania (835–844)
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Italy
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Papal States
- Pope : Gregory IV (827-844)
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Venice
- Doge of Venice : Pietro Tradonico (836–864)
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Papal States
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Moravian Empire
- Prince: Mojmir I. (833–846)
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Spain
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Asturias
- King : Alfonso II (791–842)
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Barcelona county
- Count : Bernhard of Septimania (835–844)
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Emirate of Cordoba
- Emir: Abd ar-Rahman II (822-852)
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Navarre
- King : Íñigo Arista (824–852)
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Asturias
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Wales
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Gwynedd
- Prince : Merfyn Frych (825–844)
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Powys
- Prince: Cyngen ap Cadell (808–854)
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Gwynedd