The differences in the economic development of the mid-Atlantic (Middle Colonies), New England, and Southern colonies can BEST be attributed to the:
B geographic conditions there.
Geographic conditions significantly influenced the types of crops that could be grown, the availability of natural resources, and the overall economic activities in each region. For instance, the fertile soil and favorable climate of the Southern colonies supported plantation agriculture, while the Mid-Atlantic colonies had a mixed economy that included farming and trade. New England's rocky terrain and harsher climate led to a focus on small-scale farming, fishing, and trade.