Emirate of Sicily conquer Castrogiovanni (the modern Enna, where Euphemius died) and retreated back to Mazara. In 830 they received a strong reinforcement of 30,000 Ifriqiyan and Andalusian troops. The Iberian Muslims defeated the Byzantine commander Teodotus in July–August of that year, but again a plague forced them to return to Mazara and then to Ifriqiya. The Ifriqiyan units sent to besiege Palermo managed to capture it after a year long siege in September 831. Palermo became the Muslim capital of Sicily, renamed al-Madinah ("The City"). The conquest was a see-saw affair; with considerable resistance and many internal struggles, it took over a
Capital city prime economic, cultural, or intellectual centres of a nation or an empire are sometimes referred to as primate cities. Examples are Athens, Bangkok, Brussels, Buenos Aires, Copenhagen, Cairo, London, Mexico City, Paris, Seoul and Tokyo. News media will often use the name of a capital city as an alternative name for the country of which it is the capital or of the government that is seated there, as a form of metonymy. For example, "relations between Washington and London" refer to "relations between the United States and the United Kingdom". The word "capital" derives from the Latin "caput" (genitive "capitis"),