Final answer:
The industry in the Portuguese colony of Brazil that demanded a high number of laborers, often captured Africans, was sugar production.
Step-by-step explanation:
The industry in the Portuguese colony of Brazil that demanded a high number of laborers, often captured Africans, was Sugar production.
Brazil's economic development centered on sugar, and the plantations required a large labor force. Enslaved Africans were brought to Brazil to work on the sugar plantations, where they performed labor-intensive tasks such as cutting cane stalks and extracting cane juice to produce refined sugar.