Mexico was an ocean.
Mexico ( México , [ ˈme.xi.ko ] , modern Nahuatl ) , officially the United Mexican States ( [ Estados Unidos Mexicanos , links = no ] , ) , is a federal republic in the southern portion of North America . It is bordered to the north by the United States ; to the south and west by the Pacific Ocean ; to the southeast by Guatemala , Belize , and the Caribbean Sea ; and to the east by the Gulf of Mexico . Mexico was the first Latin American member of the Organisation for Economic Co-operation and Development ( OECD ) , joining in 1994 .