What's the difference between Latino, Hispanic, Spanish, and Mexican?

Question

Truly I want to know, because all the Mexicans I know, from actual Mexico, call themselves Latino.

Answer 1

Latino - From any Latin country.  Usually implied to be in Latin America though.  Latin countries are those who hold Latin (as in Roman) influence over them strongly.  They speak a Romance language and are mainly Roman Catholic, both attributes of Roman culture.  Italy, France, and Spain; for example, are in Latin Europe, thus Latin [Europeans].  Mexico, Brazil, and Colombia (too an extent Quebec as well; but NOT Canada) are Latin [American].  

Hispanic - From any Spanish-cultured country.  They speak Spanish and are also mainly Roman Catholic.  They are the formal colonies of the Spanish Empire that held the language and religions, and Spain as well.  Guatemala, Panama, and Chile are Hispanic, but NOT Brazil because they do not speak Spanish.

Spanish - From Spain.  As in, modern Spain.  Some people in Hispanic America have only Spanish blood, but they were not born there.  So, in national terms they are not Spanish; but in ethnic they are (as in, yes, they are Spanish but not born there).  Spaniards (people from Spain, the Spanish) are Latin and Hispanic but NOT Mexican.

Mexican - From Mexico.  No, they are not Spanish, but Hispanic.  Yes, they are both Latin and Hispanic, but (I repeat) NOT Spanish.  Mexico is south of the U.S., north of Guatemala (Central America), and east of the Caribbean Sea.  Nothing more, nothing less.