Northern industries paid their workers for labor, but in the south labor was done for free. This form of labor was cheap and profitable for farmers in the south. In the north labor was costly which was another disadvantage for the north economy. An additional source of income for the southern colonies was slave trade. As mentioned previously, farmers from the south used slaves for cheap labor. How do these farmers go by getting these slaves? It is through the process of slave trade. Slave trade was a leading industry alone in the south. African American slaves was a double plus for plantation owners. Not only did they provide cheap labor in the south, but they also were “gold mines” in trading. North colonies did not use slaves as much so this too would be a reason behind their lingering