[10a] Ob-DBWI. Of course, a Mexican victory in the Rocky Mountain
War might have been impossible: it all depends on whether Britain
would have actively come to the aid of a colony losing a war, or
whether London would have preferred to hold back and broker a peace.
That makes two DBWI possibilities: ... (2)Britain rides to the rescue of its
colony, and Mexico discovers what its like to really LOSE a war. Not
that the British will have an easy time of it, but they will win.
Worst case scenario: after a significantly shorter but much much
bloodier war, the British Empire takes California and most ...of México del Norte and gives it to the CNA --- although they
might have to fight all the way to Mexico City to force the Mexicans
to the negotiating table, not unlike OTL's Mexican War.