

I was going to answer that Mexico as it once was, from current US southern states to Panama. Then, the northern US states, Canada, and Alaska could be their own tranquil cold lands.
Maybe even a division by old territories and languages so that Bolivar’s dream came true. From old Mexico (New Spain) to Cape Horn (or whatever the southernmost point lies). I cannot say that country would have been better than the USA (in terms of atrocities, wars, etc.), but I’m still curious.
Also, Brazil not imposing Portuguese to their citizens. They used to speak a criolle language, if I remember correctly. If a kind Brazilian reads this, maybe they can correct and explain it.

Yup, I would like to see the Californias united.
We have three pieces nowadays. North California (Alta California, today’s “California”) and South California (Baja California, today broke into two). Two were already bad… Let’s move into one, please.
(But don’t let the US administration get ideas).