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The conquest of Ceuta by the Portuguese on 21 August 1415 marks an important step in the beginning of the Portuguese Empire in Africa. ... Prior to its capture by the Portuguese, Ceuta had seen a period of political instability in ... It was soon realised that without the city of Tangier, possession of Ceuta was worthless.

Missing: three ‎| Must include: three

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hi, according to my research the answer to the first question would be false. al tabari was the author of the first medical encyclopedia & he was a persian scholar not arab