US-Canada MapVersión en línea Physical and Political Features por Brandon Alexander 1 Rocky Mountains 2 Great Plains 3 Arctic Ocean 4 Pacific Ocean 5 Atlantic Ocean 6 Pacific Coastal Ranges 7 Canadian Shield 8 Mexico 9 Appalachian Mountains 10 Great Lakes 11 Atlantic & Gulf Coastal Plains 12 Hudson Bay 13 Mississippi River 14 Columbia River 15 Colorado River 16 Rio Grande River 17 St. Lawrence 18 Gulf of Mexico 19 Grand Canyon 20 Aleutian Islands 21 Niagara Falls