Transportation and deposition.
The Mississippi river delta.
Texas
watershed
The area between the Mississippi River and the Rockies is known as the Great Plains.
The total land area of the states plus DC east of the Mississippi River is approximately 1.6 million square miles.
Since "river" refers to the body of water and "watershed" refers to the land area which drains into the river, the Mississippi River would be a ribbon of water rather than a watershed.
An alluvion is the increase in the area of land due to the deposition of sediment from a river.
this area will be the bread basket of the new world
Mississippi
Mississippi comprises 30,020,454.4 acres (land area).
Normally land
Mississippi's area is 48,434 square miles.