answers: international border
context: Republic of Texas, Texas's unenforced boundary claims as far as the Rio Grande, and the 1845 annexation of Texas by the United States. Instead, Article V of the treaty simply described the new U.S.–Mexico border. From east to west, the border consisted of the Rio Grande northwest from its mouth to the point Santa Fe de Nuevo Mexico (roughly 32 degrees north), as shown in the Disturnell map, then due west from this point to the 110th meridian west, then north along the 110th Meridian to the Gila River and down the river to its mouth. Unlike the New Mexico </s> Mexico–United States border The Mexico–United States border () is an international border, nearly 3,100 kilometers long (2,000 miles) separating Mexico and the United States, extending from the Pacific Ocean to the west and Gulf of Mexico to the east. The border traverses a variety of terrains, ranging from urban areas to deserts. The Mexico–US border is the most frequently crossed border in the world, with approximately 350 million documented crossings annually. The total length of the continental border is . From the Gulf of Mexico, it follows the course of the Rio Grande (Río Bravo del Norte) to the border </s> Border apprehensions in 2010 were at their lowest level since 1972. In December 2016 apprehensions were at 58,478, whereas in March 2017, there were 17,000 apprehensions, which was the fifth month in a row of decline. The 1,954-mile (3,145 km) border between the United States and Mexico traverses a variety of terrains, including urban areas and deserts. The barrier is located on both urban and uninhabited sections of the border, areas where the most concentrated numbers of illegal crossings and drug trafficking have been observed in the past. These urban areas include San Diego, California and El Paso, Texas. As
question: what kind of border is between texas and mexico