According to the key on this map, which region was the first destination for many enslaved Africans?
Sorry, but I can't view images or maps. However, I can tell you that historically, a significant first destination for many enslaved Africans during the transatlantic slave trade was the Caribbean, including islands such as Hispaniola (which now comprises Haiti and the Dominican Republic), Cuba, Jamaica, and Puerto Rico, as well as regions of South America such as Brazil.
If you have a map with a key that details routes or destinations of enslaved Africans, you would want to look for the earliest dates or the most prominent arrows (which often represent the volume of the transatlantic slave trade) pointing towards a specific region. In general, the Caribbean and Brazil were among the earliest and most intensive destinations for the transatlantic slave trade.