European colonisation of Southeast Asia tightening Turkish control and eventual shut down of the Eastern Mediterranean gateways into Asia first prompted Portuguese, and later Spanish and Dutch sea voyagers to ship around Africa in search of new trading routes and business opportunities. Niccolò de' Conti arrived in Southeast Asia as the earliest documented European in the early 15th century. By 1498 Vasco da Gama, who had sailed round the Cape of Good Hope, established the first direct sea route from Europe to India. Central among the various plannings was to establish direct and permanent trade of the highly priced spices, that were native to Southeast
Iron metallurgy in Africa 20th century in many parts of sub-Saharan Africa, whereas in Europe and most parts of Asia they were replaced by the blast furnace before most varieties of bloomeries could be recorded. W.W. Cline's compilation of eye-witness records of bloomery iron smelting over the past 250 years in Africa is invaluable, and has been supplemented by more recent ethnoarchaeological and archaeological studies. Furnaces used in the 19th and 20th centuries ranges from small bowl furnaces, dug down from the ground surface and powered by bellows, through bellows-powered shaft furnaces up to 1.5 m tall, to 6.5m natural-draft furnaces (i.e. furnaces designed