I am totally against it as this type of divisions are creating differences and animosity among people, and are sometimes even leading to conflicts. I especially disagree with it from today's perspective, as people today are moving and migrating more and more and therefore the existence of nation states is nonsense.
Explanation:
I think that we should strive to the creation of political arrangements as we have in European Union.
A larger market without boundaries, with certain individualities should be something that is acceptable to all of us.
We should not create differences, but try to overcome them.
The valley of Mexico is a highlands plateau in central Mexico roughly coterminous with the Present-day Mexico city and the Eastern half of the State of Mexico