The answer is the third choice hope i helped
Geographic means physicals features of the land in this case you look at only the negatives of this like big bodies of water mountains and steep terrain these made it difficult because some settlers didn't have horses or were traveling in large groups wich could contain elderly and young children
Black nationalism, or "Black Power" as it is sometimes known focused on black people improving their own communities, rather than fighting for full integration into American society as a whole.
