Also known as Fifth Fitna, Abbasid civil war (865–866)
armed conflict between the rival caliphs al-Musta'in and al-Mu'tazz for control over the Abbasid Caliphate; al-Mu'tazz won, and Al-Musta'in was executed shortly afterward
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).