Seville was founded as the Roman city of . Known as Ishbiliyah after the Islamic conquest in 711, Seville became the centre of the independent Taifa of Seville following the collapse of the Caliphate of Córdoba in the early 11th century; later it was ruled by Almoravids and Almohads until being incorporated to the Crown of Castile in 1248. Owing to its role as gateway of the Spanish Empire's trans-atlantic trade, managed from the Casa de Contratación, Seville became one of the largest cities in Western Europe in the 16th century. Following a deterioration in drought conditions in the Guadalquivir, the American trade gradually moved away from the city of Seville, in favour initially of downstream-dependent berths and eventually of the Bay of Cádiz – to which were eventually transferred control of both the fleets of the Indies (1680) and the Casa de Contratación (1717).
Seville was founded as the Roman city of . Known as Ishbiliyah after the Islamic conquest in 711, Seville became the centre of the independent Taifa of Seville following the collapse of the Caliphate of Córdoba in the early 11th century; later it was ruled by Almoravids and Almohads until being incorporated to the Crown of Castile in 1248. Owing to its role as gateway of the Spanish Empire's trans-atlantic trade managed from the Casa de Contratación, Seville became one of the largest cities in Western Europe in t,he 16th century. Following a deterioration in drought conditions in the Guadalquivir, the American trade gradually moved away from the city of Seville, in favour initially of downstream-dependent berths and eventually of the Bay of Cádiz – to which were eventually transferred control of both the fleets of the Indies (1680) and the Casa de Contratación (1717).