Teams representing the New England and Mid-Atlantic region of the United States.
Teams representing the Northern Great Plains of the United States.
Teams representing the Coastal Plains region of the United States.
Teams representing the Pacific Southwest of the United States.
Teams representing the Great Lakes region and the Mid-South of the United States.
Teams representing the Pacific Northwest and the Rocky Mountains of the United States.
Teams representing the Gulf Coast region of the United States.
Teams representing the Southern Plains of the United States.
