1. Our geographical location
Mexico is NOT part of South America or Central America. Our country is part of North America (which is not unique to Americans) and yet we are still Latinos. So do not call us South Americans because we are not.
In an exchange trip to Argentina, one of my teachers opened the class by asking the Mexican to stand up, then he asked me the following questions “Which part of Mexico are you from?”, followed by, “you’re a Mariachi, right?”
Foreign friend, although it is a tradition in Mexico, NOT all Mexicans are mariachis, we don’t all sing like mariachis or play instruments like mariachis.