Distrito Federal (Federal District) which is a federation-owned political entity, much akin DC in the States.
The gulf of Mexico / the Atlantic.
Lake Texcoco
Central Mexican Plateau or Mexican Altiplano.
they lie in the middle latitude zone where it is hot and cold
Two of them would be Seattle or New York City. On the Mexican side, another example would be Mexico City or Cancun
Saudi Arabia is in the tropics.
japan
no sea things do not live in the twilight zone
china
china
Right. It is just across the Rio Grande River and 'in front' of the city of Ciudad Juarez, Mexico.
No.