"You wake up to cereal made from midwestern corn. You slip on cotton clothes, get into a vehicle fueled partly by ethanol and dine later on chicken and rice—all made possible by crops from the Mississippi River Basin, a vast area that stretches from Montana to New York and drains all or parts of 31 states.
The part of the basin east of the Mississippi River largely relies on rain to grow crops; farmers on the west side irrigate much, much more. All told, it's among the most productive farming regions in the world."
via news.nationalgeographic.com