The term that best describes the Southern economy before the Civil War is (B)Agriculture.
Step-by-step explanation:
Plantation and slavery where the two important characteristic of the economy of the southern colonies .The main crops grown in by these economies where Indigo, tobacco, wheat, and rice and this was due to the availability of the river water for irrigation.
The impact of civil war on the Southern economy was negative because major war took place in the southern region thus destroying the productivity of the agricultural land.The southern economy was a slavery based economy ,but due to civil war it lost its ability to exploit the labor who worked as slave thus reducing its overall profit.
Thus we can say that The term that best describes the Southern economy before the Civil War is (B)Agriculture.