The Spanish crown's choice of labour organization in sixteenth-century Spanish America summary is slavery. Hence, option B is correct.
<h3>What is labour organization?</h3>
A labour union is a particular kind of group that negotiates on behalf of workers' interests with employers about things like salary and complaints. It combines social protection for families, occupational safety, and access to fruitful and fairly compensated labour.
The International Labour Organization (ILO) is dedicated to promote social justice and generally recognized human and labour rights because it believes that labour peace is essential to prosperity.
Thus, option B is correct.
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