The underlined sentence in the outline is the introduction.
One way in which the Kingdom of Ghana facilitated the gold trade was by trading gold with slaves and other indentured workers. Most of this trading was done with other African nations but some with Europeans.
I believe the answer is d.
Change came in 1786 when Virginia passed the Statute for Religious Freedom. Drafted by Thomas Jefferson, the new law served as a model for the First Amendment. It established a clear separation of church and state. So the answer is B