DBWI The rio grand republic doesn't come back

After the Mexican American war, the people of what was then northern mexico still had massive feelings of resentment towards the central government and many remembered things being slightly better during the brief first republic of the Rio Grand. With the mexican Army in shambles they revolted and successfully won indepedence from Mexico city.

Rio's been independent ever since, but what if that effort failed what would mexico and the world look like today?
 
Mexico would have a more northerly border with Texas rather than the Colorado Confederation that Rio Grande formed with Texas.
While Texas would be supported by the USA against Mexico I can't see them supporting Texan expansion into Mexican territory without getting something themselves so it's possible the Republic of the Californias doesn't exist either. Perhaps divided between Texas, US, and Canada?
 
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