Which of the following is correct regarding the strategies of each side during the civil war? select one: a. the south created a naval blockade of northern ports and the union focused on taking over the confederate capital in alabama. b. the south focused on its alliances with france and england while the north focused on fighting a defensive battle. c. the north placed a blockade on southern ports and wanted to take over richmond while the south focused on fighting a defensive war. d. the south had to focus on invading and overpowering the north, while the north only had to defend its territory against the south