It's DF, not DE. It stands for 'Distrito Federal' (Federal District), which is similar to the US' Washington, D.C. (District of Columbia).
DF stands for Distrito Federal (Federal District). It is the political entity where Mexico City (Ciudad de Mexico) is located.
CIUdad de Mexico = Mexico City
literally, the city of Mexico. It stands for Mexico City.
It is not national; it is the "Mexico City Metropolitan Cathedral" (Spanish: Catedral Metropolitana de la Ciudad de Mexico).
Right
City of Mexico
There are many such plazas de toros (for bullfighting) in Mexico, not just belonging to one city. Some cities with them include Mexico City, Guanajuato and Queretaro.
"Bienvenido a la Ciudad de Mexico"
The literal Spanish translation to Mexico City.
UNAM (Universidad Nacional Autonoma de Mexico) qualifies as such. It is also located in Mexico City.
Rafael de Paz died in 1983, in Mexico City, Mexico.
It depends on the context, but I guess you mean as part of an address. That means it is a "Colonia" or neighborhood. For example, the American Embassy in Mexico City is on the "Cuahutemoc" neighborhood or colonia.Mexico addresses include Street + number, Colonia, Zip Code, City, State, Country. For example:American Embassy in Mexico CityPaseo de la Reforma 305, Col. Cuauhtemoc, 06500, Ciudad de Mexico, Distrito Federal, Mexico.