Subjects: ABBASIDS; COUPS d'etat; ASSASSINATION -- HistoryMA'MUN, al-, 813-833; MUHAMMAD b. Harun al-Mu'tasim bi-llah Abu Ishaq, Caliph of the Abbasid Caliphate
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Subjects: BYZANTINE Reconquest, Crete, Greece, 961; BYZANTINE Empire; BYZANTINE Empire, 527-1081GREECE