C should be the correct answer
Christianity.
This is shown when he conquers the Saxons of the North, he had convert them to Christianity. This is further proven as he encouraged church-based education. Thus, overall, showing that he spread Christianity to lands that he conquered.
Hope this helps!
The advantage the north has is A-it had more industries, as the union could build guns, ships cannons at a faster and better rate than the south. The other answers just don't make sense as the south grew the most cotton, they both had experienced commanders, and the weather didn't have much effect. I hope this helps!
It would be D.) "hide the proof of the Holocaust."
