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United States, Texas

Texas is the largest of the continental 48 American states. It lies at the western end of the Gulf of Mexico and the Southern Gulf Coastal Plain. It is also at the southern end of the North American Great Plains. The state is 266,807 square miles (691,030 square kilometers) and it extends over 800 miles from the Texas state line with Louisiana near Beaumont to El Paso in the west, which is close to New Mexico. It extends 737 miles (1,186 kilometers) from its northern extreme near Dalhart in the panhandle to its southernmost point near Brownsville on the Rio Grande River, which separates it from Mexico.

The topography of Texas can be compared to four steps. Beginning at sea level at the Gulf of Mexico ...

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