Crop is grown primarily for sale rather than for a farmer's own use in colnial america

The crop that is grown to be sold for money is called cash crop. It is different from subsistence crops because subsistence crops are grown to fulfil the needs of farmer's own livestock or for the producers family.  Earlier, cash crops were small part of farmers yield but today almost all the crops are grown for cash especially in developed countries. While in non-developed countries cash crops are grown for sale in developed nations.  

Farmer in the new England colonies had a rough time with farming because the soil wasn't good for growing crops. The winters in the New England arrived early  and lasted longer, it killed many crops. The people of new England didn't grow cash crops.

The farmer of the middle colonies were most prosperous and grew barley, oats, corn and rye. It was due to this prosperity of crops middle colonies were also called  Breadbasket.

The farmers of Southern colonies grew tobacco. Virginia and North Carolina was famous for tobacco use while South Carolina and Georgia grew rice and indigo.

one of the major compromises in the constitutional convention was between the small states and big states. the small states wanted each state to have the same number of representatives in congress. the big states wanted representation based on population.