Texas

Texas /ˈtɛksəs/ (Spanish: Texas or Tejas [ˈtexas]) is a state in the United States of America. It is the second most populous and second largest state by area in the US. Geographically located in the south central part of the country, Texas shares an international border with Mexico to the south and borders the states of New Mexico to the west, Oklahoma to the north, Arkansas to the northeast, and Louisiana to the east. Texas has an area of 268,820 square miles (696,200 km²) and a growing population of over 27.5 million residents (July 2015).

Houston is the largest city in Texas and the fourth-largest in the United States, while San Antonio is the second largest in the state and seventh largest in the United States. Dallas–Fort Worth and Greater Houston are the fourth and fifth largest United States metropolitan statistical areas, respectively. Other major cities include Austin (the state capital) and El Paso. Texas is nicknamed the Lone Star State to signify Texas as a former independent republic, and as a reminder of the state's struggle for independence from Mexico. The "Lone Star" can be found on the Texan state flag and on the Texan state seal. The origin of the state name, Texas, is from the word, "Tejas", which means 'friends' in the Caddo language.

West Texas

West Texas is a vernacular term applied to a region in the southwestern quadrant of the United States that primarily encompasses the arid and semiarid lands in the western portion of the state of Texas.

A general lack of consensus exists regarding the boundaries that separate East and West Texas.Walter Prescott Webb, the American historian and geographer, suggested the 98th meridian separates East and West Texas. The Texas writer A.C. Greene proposed that West Texas extends west of the Brazos River. Perhaps, the truth is no distinct line separates them. Rather, some places are clearly in West Texas and some are clearly in East Texas, and then some fall within a transitional zone between these two regions.

West Texas is often subdivided according to distinct physiographic features. The portion of West Texas that lies west of the Pecos River is often referred to as "Far West Texas" or the "Trans-Pecos", a term first introduced in 1887 by the Texas geologist Robert T. Hill. The Trans-Pecos lies within the Chihuahuan Desert, the most arid portion of the state. Another important subdivision of West Texas is the Llano Estacado, a vast region of high, level plains extending into Eastern New Mexico and the Texas Panhandle. To the east of the Llano Estacado lies the “redbed country” of the Rolling Plains and to the south of the Llano Estacado lies the Edwards Plateau. The Rolling Plains and the Edwards Plateau subregions act as transitional zones between East and West Texas.