Nueces River and Rio Grande River respectively, qualify as such.
New Mexico is bordered by Texas to the east, south and southeast.
Mexico is the only country that borders Texas.
New Mexico, Oklahoma, Arkansas and Louisiana
Gulf of Mexico
Texas is bordered by New Mexico to the west.
South and east of the United States. Central America is bordered to the north by the American states of Texas, New Mexico, Arizona, and California and bordered to the south by the south American country of Columbia. to the west of both south and central America is the Pacific ocean and to the east of south America is the Atlantic while central America is bordered to the east by the gulf of Mexico sometimes called the Caribbean.
Houston is the largest city in Texas and the fourth largest city in the Unites States. Texas is bordered by the Gulf of Mexico. Houston is located in southeast Texas near the Gulf of Mexico. Texas is not bordered by any ocean.
There may be some islands that are under Mexican rule, but Mexico, itself, is not an island, at all - - - it is bordered to the south by Central America, and to the north by the United States, mainly along Texas, Arizona, and New Mexico.
Mexico is bordered on the north by (west to east): California, Arizona, New Mexico, and Texas,
Arizona, Colorado, Texas, Oklahoma, and Utah.
Mexico
New Mexico, Colorado, Kansas, Missouri, Arkansas and Texas.