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Subject
- History23
- Caliphate6
- Abbasids5
- Politics and government5
- Caliphs3
- Islam3
- Political science3
- Autonomous communities2
- Historical geography2
- Kings and rulers2
- Maʼmūn, Caliph, 786-8332
- Abbasid1
- Biography1
- City walls1
- Fortification1
- History, Military1
- Islamic civilization1
- Mongols1
- Mustaʻṣim Billāh, Caliph, approximately 1212-12581
- Public administration1