By the late 1600s, England became the dominant country in the Atlantic slave trade, overtaking other European nations like Portugal and Spain. This shift was driven by England's naval power and an increasing demand for labor in the Americas. Key developments included the establishment of the Royal African Company and the growth of major English ports as trade hubs. ;
By the late 1600s, England dominated the Atlantic slave trade, overtaking Portugal and Spain. This shift was due to increased demand for labor, naval power, the establishment of trade companies like the Royal African Company, and the development of key port cities. Thus, the correct answer is A. England.
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