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It is estimated that by the early 16th century as much as 10% of Lisbon's population was of African descent. After the European discovery of the American continent, the demand for African labour gradually grew, as other sources of labour - both European and American - were found to be insufficient.
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a person who searches for mineral deposits, especially by drilling and excavation.
hope this helped
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what's the picture? if you put it on, I'll know what to say
