The territory of contemporary Mexico is not coextensive with what might be termed Mexican Spanish. The Spanish spoken in the southernmost state of Chiapas, bordering Guatemala, resembles the variety of Central American Spanish spoken in that country, where "voseo" is used. Meanwhile, to the north, many Mexicans stayed in Texas after its independence from Mexico, and their descendants continue to speak a variety of Spanish known as "Tex-Mex." And after the Treaty of Guadalupe Hidalgo many Mexicans remained in the territory ceded to the U.S., and their descendants have continued to speak Spanish within their communities in Arizona, California, Colorado, New Mexico, Nevada, Utah, and Wyoming. In addition, the waves of 19th- and 20th-century migration from Mexico to the United States (mostly to the formerly Mexican area of the Southwest) have contributed greatly to making Mexican Spanish the most widely spoken variety of Spanish in the United States. The Spanish spoken in the Gulf coastal areas of Veracruz and Tabasco and in the states of Yucatan and Quintana Roo exhibits more Caribbean phonetic traits than that spoken in the rest of Mexico. And the Spanish of the Yucatán Peninsula is distinct from all other forms in its intonation and in the incorporation of Mayan words.