Answer:
The Portuguese were using enslaved Africans on sugar plantations in Madeira,They were able to buy slaves from African merchants in this region in return for cloth, horses, trinkets and salt.
Explanation:
In 1450, small yet regular slave trade between Africa and Europe was established. The greatest market for slaves was the sugar plantations.
Trade refers to the buying and selling of goods and services.
Portuguese established sugarcane plantations on their island colony which was known as Madeira. Due to the higher demand for labor in America, Spain granted Portugal a license for bringing slaves directly to America.
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