Slavery was not new to Africa or Europe. Both had versions of it throughout their history. How were the Atlantic slave trade and American slavery different than previous versions of slavery?

Various forms of slavery, servitude, or coerced human labor existed throughout the world before the development of the trans-Atlantic slave trade in the sixteenth century. As historian David Eltis explains, “almost all peoples have been both slaves and slaveholders at some point in their histories.” Still, earlier coerced labor systems in the Atlantic World generally differed, in terms of scale, legal status, and racial definitions, from the trans-Atlantic chattel slavery system that developed and shaped New World societies from the sixteenth to the nineteenth centuries.

the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.  

its a map of something