What was the main effect of the systems of sharecropping and debt peonage put in place in the south after the civil war? (5 points) a)agricultural output grew quickly enough to return to pre-civil war levels by the end of the 19th century. b)african americans were prevented from leaving the plantations where they had been enslaved. c)the southern economy was unable to move from an agricultural basis to an industrial basis. d)land ownership was transferred from large plantation owners to both poor white farmers and emancipated slaves.