According to TIMEDICTIONARY.COM, the USA is divided into several natural regions:
Atlantic coastal plain
On the Atlantic coast, especially on the Florida peninsula and on the Gulf of Mexico, there is a flat plain with numerous large cities: on the Atlantic New York City and Boston, on the Chesapeake Bay Washington, in the southern states Miami, New Orleans, Atlanta as well Houston.
The south of Florida is shaped by the Everglades, a tropical marshland. The world’s third largest coral reef is located off the coast of Florida. There are also many wetlands in the Gulf of Mexico region.
Much of the state of Florida lies on a peninsula between the Gulf of Mexico, the Atlantic Ocean and the Florida Strait. The so-called Panhandle extends over two time zones in the northwest along the northern Gulf of Mexico.
Florida is bounded in the north by the states of Georgia and Alabama and in the west, at the end of the panhandle of Alabama. The closest islands are the Bahamas and several Caribbean countries, especially Cuba.
Florida is one of the largest states east of the Mississippi River. Of all the US states, only Alaska and Michigan have larger bodies of water.
At 105 m, Britton Hill is the highest point in Florida and the lowest highest point of any state in the United States. It’s on the Panhandle, on the Alabama border. The highest point on the Florida Peninsula proper, Sugarloaf Mountain, is a 95 m high peak in Lake County.
Much of Florida south of Orlando is flat, with only a few places such as Clearwater reaching heights of 15-30 m. In central and northern Florida, about 40 km from the coast, ranges of hills rise from 30 to 76 m.
The forest-covered Appalachian low mountain range rises further inland. It stretches in several chains from the Canadian border region in Maine to the Great Smoky Mountains to the south of Alabama. The highest point in the Appalachian Mountains is Mount Mitchell in North Carolina (2,040 m).
The Appalachians are rich in mineral resources, especially coal and ores. The most important industrial city for the region, Pittsburgh, is located in the state of Pennsylvania.
Central Plain and Highlands (also Inner Plain)
The Central Plain extends from the Great Lakes in the northern part of the country over Illinois and Arkansas to the Gulf of Mexico (Louisana) along the major rivers Missouri River and Mississippi River. The main regional cities are Chicago and Memphis. In the west of the lowlands (from North Dakota to Oklahoma and Nebraska to Texas) there is a higher region.
The Central Plains and the Highlands are partly part of the Midwest and the Great Plains. The region is characterized on the one hand by prairies and extensive agricultural areas, on the other hand by large industrial cities and transport infrastructure (e.g. the rail hub in Chicago or Chicago O’Hare Airport).
The mountain range of the Rocky Mountains, located in western North America and running in a north-south direction, runs through Alsaka and Canada via Idaho, Montana and Wyoming to Colorado, New Mexico and Mexico through the entire North American subcontinent.
Some of the mountains are up to 1,500 km wide, with the highest peak in North America, Mount Mckinley in Alaska (6,193 meters) rising to the north of the chain.
The highest point in the US heartland is also in the Rocky Mountains: Mount Elbert in Colorado (4,396 m). One of the world’s most famous national parks is also located here, Yellowstone National Park, important cities in the region include Denver and Santa Fe.
The northern area in the Great Basin is characterized by large salt flats and the Great Salt Lake near Salt Lake City. The arid and relatively cool Great Basin Desert is located in Nevada. Further south is the city of Las Vegas and the hot Mojave Desert, the Death Valley with the lowest point in the western hemisphere (-86 m) and the Grand Canyon in the Colorado Plateau. The most important river in the Great Basin is the Colorado River. To the west of the basin is the Sierra Nevada, to the south of Arizona is the species-rich Sonoran Desert. The cities of Tucson and Phoenix are also located here.
The American states of Alaska, Washington, Oregon and California border the Pacific Ocean, the greater region of the Pacific Northwest includes the states of Oregon, Washington and the state of Idaho (which is not a bordering the Pacific).
With the exception of Idaho, the region of the Pacific Northwest is dominated by a cascade chain with Mount Rainier (4,377 m) as the highest peak and the Mount St. Helens volcano; in California, this mountain range extends into the Sierra Nevada. Here is Mount Whitney (4,418 m), the highest point of the 48 connected American states. On the coast to the Pacific there are several other coastal mountains.
Here is an accurate topographic map of the United States.
The main river in the Pacific Northwest is the Columbia River. The northernmost rainforest in the world is located on the Olympic Peninsula near Seattle. The forest belongs to the temperate, non-tropical rainforests.
In the north of San Francisco as well as in the Sierra Nevada there are regions in which sequoias still grow today. In the states on the Pacific coast, numerous national parks have been designated, for example in California Yosemite, Sequoia and Kings Canyon and Redwood, in Washington the Olympic National Park, Mount Rainier and North Cascades, in Alaska the Lake Clark National Park and the Kenai Fjords National Park.