Madeira (Portuguese: [mɐˈðejɾɐ] or [mɐˈðɐjɾɐ]) is a Portuguese archipelago that lies between 32°22.3′N 16°16.5′W and 33°7.8′N 17°16.65′W, just under 400 km north of Tenerife, Canary Islands, in the north Atlantic Ocean.
Madeira was discovered by Portuguese sailors in the service of Infante D. Henrique (Henry the Navigator) in 1419, and settled after 1420. The archipelago is considered to be the first territorial discovery of the exploratory period of the Portuguese Age of Discovery.
Sugarcane production was the primary engine of the island's economy, increasing the demand for labour. Slaves were used during portions of the island's history to cultivate sugar cane, and the proportion of imported slaves reached 10% of the total population of Madeira by the 16th century.
In 1617, Algerian pirates, having long enslaved Christians along the Mediterranean coasts, captured 1,200 men and women in Porto Santo. http://en.wikipedia.org/wiki/Madeira