Each symbol (triangle, square, diamond and circle) in this table has a value. The total of these values in each row and column is written at the end of the corresponding row or column. Now write down the value of each symbol.

A．before the Civil War, the Northern states needed more slaves to work for them
B．after the Civil War, there was a strong hatred from the Northern states against the Southern states
C．before the Civil War, the Northern states had a better economic system than the Southern states
D．before the Civil War, the Northern states had an economic system different from the Southern states