Marsala the area has been conquered by Norman, Angevin and Aragonese troops. During this time, Marsala became wealthy, primarily through trade. However the blocking up of the harbour of Punta Alga, decreed by Emperor Charles V so as to stop Saracen forays, brought an end to this period of prosperity. The development of Marsala wine at the end of the 18th century, headed by English merchants settled in Sicily, considerably improved local trade. This triggered an economic expansion in Marsala, including the funding of infrastructure projects such as the current harbour of Margitello. On 11 May 1860 Giuseppe Garibaldi landed at
Island of the Jewel broadly. The four chorographic maps of the 1037 manuscript of al-Khwārizmī—including that of the Island of the Jewel—are the oldest surviving maps from the Islamic world. Al-Khwārizmī gave the Island of the Jewel as the easternmost point of the inhabited world. His gazetteer is divided by categories but altogether he provides coordinates for its coast, three cities, its surrounding chain of mountains, and two summits on the interior. It lies in the Sea of Darkness near the equator, east of his equivalent of Ptolemy's Golden Peninsula (Malaysia) and east of the still larger phantom peninsula—now usually known as the Dragon's