Answer:
The southern colonies of England had the farm economy which essentially needed the slave labor for its field works.
Step-by-step explanation:
Slavery began to spread from the south colonies. Slowly the trade started between slavery. The southern part initiated the trend by making them work in the field in growing the crops and exporting it.
After the gradual increase of the demand of the slave it spread around the country. These slaves used to grow huge amount of tobacco, cotton and other cash crops.