How were colonies helpful to a countries economy

Cereal grains, flax, and cattle became important to the economies of Virginia and Maryland in the eighteenth century. Filtering into the backcountry of Pennsylvania, Virginia, and the Carolinas, they established farms on the frontier and grew just enough food to keep themselves going. Colonial trade and industry.

Explanation:

i dont know the answer sorry but if i knew it i would of told you

not really sure i needed the points. sorry