Which statement(s) correctly describes the North prior to the Civil War? i. The North depended on a large immigrant labor force. ii. The North depended on a large slave labor force. iii. The North depended on agriculture to support its economy. iv. The North depended on manufacturing to support its economy. A. i only B. ii only C. i and iv only D. ii and iii only Please select the best answer from the choices provided A B C D