Its goals were to rally the troops, win foreign allies, and to announce the creation of a new country. The introductory sentence states the Declaration's main purpose, to explain the colonists' right to revolution.
because due to the expansion of the agricultural the African slave have had the chance to be free and due to the expansion agriculture from Brazil into Carribbean drove the expansion of the trade
That is describing what the character does so it is C. It couldn't be A because it isn't a part of the story. It couldn't be B because it isn't a problem. It lastly couldn't be D because it's not a message the author is trying to convey to the reader.
