Although you did not present the image that this question refers to, we can say that landscape paintings were very popular in the Song dynasty, as artists were encouraged to represent the natural beauty of China. The Song Dynasty was very prominent in relation to the arts and encouraged the Chinese environment and culture to be poetically and artistically represented mainly in ceramics and painting.
I would say the first statement ("By the end of the Civil War, black men made up nearly ten percent of the Union Army"), because B is irrelevant and neither C nor D is something that would specifically indebt the North
This was a big thing back in the day when dealing with the wars. They wanted to encourage their citizens to help with the war efforts even if they didn't exactly join the military.
