No, because by taking children away from their families, it destroyed traditional cultures, and aboriginal society.
Answer: Portugal
Explanation:
The Portuguese in 16th century, 1526 to be precised, carried out the first Atlantic slave trade, this traded to Brazil.
Tariff may be the word you're looking for.
Well I would personally say the engineering industry, as during the wartime technology needs to be developed/improved in order to defeat the opposing side.