Answer:
There are still various landmarks and cities in North America with Spanish names, (examples- Santa Fe, San Diego, San Fransisco). In the case of Mexico and other Latin American countries, they adopted and tweaked the Spanish language to suit both the Indigenous population and the Spanish governors and settlers. On top of that, the introduction of Christianity caused certain holidays to be accentuated (examples- Dio de los Muertos [day of the Dead, which goes along with All Saint's Day and All Soul's Day on November 1st and 2nd], Christmas [it coincided with the birthday of a Aztec god; that's partially why Christmas is December 25])