why is the us cornbelt considered a formal region
Corn Belt In 1997, the USEPA published its report on United States' ecoregions, in part based on "land use." Its "Level III" region classification contains three contiguous "Corn Belt" regions, Western (47), Central (54), and Eastern (55), stretching from Indiana to eastern Nebraska.[9][10]
North America The largest countries of the continent, Canada and the United States, also contain well-defined and recognized regions. In the case of Canada these are the British Columbia Coast, Canadian Prairies, Central Canada, Atlantic Canada, and Northern Canada. These regions also contain many subregions. In the case of the United States – and in accordance with the US Census Bureau definitions – these regions are: New England, Mid-Atlantic, East North Central States, West North Central States, South Atlantic States, East South Central States, West South Central States, Mountain States, and Pacific States. Regions shared between both nations included the Great Lakes Region. Megalopolises have also formed between both nations in the case of the Pacific Northwest and the Great Lakes Megaregion.