Western USA:

Alaska
Washington
Oregon
California
Idaho
Nevada
Arizona
Hawaii

Mid-West USA:

Montana
Wyoming
Utah
Colorado
New Mexico
Texas
North Dakota
South Dakota
Nebraska
Kansas
Oklahoma
Minnesota
Iowa
Arkansas
Missouri
Louisana

Central USA:

Michigan
Illinios
Indiana
Ohio
Kentucky
Tennessee
Wisconsin
Mississippi
Alabama
Georgia
Florida
North Carolina
South Carolina

Eastern USA:

Virginia
West Virginia
Pennsylvania
New Jersey
Delaware
New York
Rhode Island
Massachusetts
Connecticut
Vermont
Maine
New Hampshire
Maryland