Final answer:
The Middle Atlantic States produce enough grains such as wheat and corn to sustain their entire population as well as contribute to agricultural exports.
Step-by-step explanation:
The Middle Atlantic States are renowned for their agricultural production, and amongst their most lucrative and prolific crops are grains such as wheat and corn. These crops are not only vital for the sustenance of the region's own population but are also significant for the economy, as they contribute to the area's agricultural exports. Over the years, the Middle Atlantic region has been able to leverage its fertile soils to cultivate these grains efficiently, thus enabling them to produce enough to feed their entire population and beyond.