Which nation ended Spanish and Portuguese domination of the slave trade in the early-seventeenth century?

Question

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Holland, also known as the Dutch Republic, became a major power in trade and shipping in the early-seventeenth century. They established their own slave-trading companies and challenged the Portuguese and Spanish dominance in the trade. With their superior naval power, the Dutch were able to gain control of the slave trade in many areas, including parts of the Caribbean and West Africa, and effectively ended the Spanish and Portuguese domination.

Which Nation Ended Spanish and Portuguese Domination of the Slave