turn, starting a chain reaction. However, in Thailand, urbanization has also resulted in massive increases in problems such as obesity. Thunderstorms are rare, as the city reports thunder on just seven days per year. By 1340, Cairo had a population of close to half a million, making it the largest city west of China. Meanwhile, additional controls of the Nile fostered development within Gezira Island and along the city's waterfront. Nevada's industrial outputs are tourism, mining, machinery, printing and publishing, food processing, and electric equipment. The name "Caribbean" derives from the Caribs, one of the dominant Native American groups in the region at the time of European contact during the late 15th century. After the discovery of America by Christopher Columbus in 1492, the Spanish term Antillas applied