40 million 4 million 80 million 14 million
Mississippi River Colorado River Columbia River Rio Grande
Lake Huron Lake Erie Lake Ontario Lake Superior
Minneapolis Bloomington St Paul Rochester
Wisconsin North Dakota Canada South Dakota
Shenandoah NP Glacier Bay NP Acadia NP Voyageurs International Park
Interstate 10 Interstate 90 Interstate 35 Interstate 94
Prairie State Lone Star State North Star State Sunshine State
Paired Cities Similar Cities Competing Cities Twin Cities
10.4 million 5.2 million 2.6 million 1.3 million