Final answer:
Denmark transported the smallest number of enslaved Africans to the Americas compared to the other options listed. Denmark entered the transatlantic slave trade after other European powers and thus had a relatively smaller role in the transportation of enslaved Africans to the Americas compared to countries like Portugal and Britain.
Step-by-step explanation:
The country that transported the smallest number of enslaved Africans to the Americas is Denmark (C). Portugal (A) initiated the era of Atlantic exploration and was among the first nations to engage in the Atlantic slave trade, whereas France (D) joined the traffic of slaves later but still ahead of Denmark. Spain (B), although not initiating the slave trade, participated actively in it. Denmark entered the transatlantic slave trade after other European powers and thus had a relatively smaller role in the transportation of enslaved Africans to the Americas compared to countries like Portugal and Britain.