Answer:
<em>Ciudad de Mexico</em>
Explanation:
<u><em>For the past two centuries, the city has been known as “DF” from its official name of Mexico Distrito Federal, or Federal District. But now the city of nearly nine million will be known as Ciudad de Mexico, or CDMX. That is the Spanish version of what the city is already called by English speakers: Mexico City.</em></u>
11. The first one. 12. Second
The 1st one because the second word of the second sentence says book translated in English so your not talking about a book so it has to be the first one