What would it have taken for Maximilian and the Empire to win against the Republicans?
There was no one else who could have succeeded him if he died?The entire republican movement was centered on Benito Juarez, get rid of him and the movement fragments and it's easy to pick up the divided enemy.
There was no one else who could have succeeded him if he died?
I'm not too sure about Yucatan. What I've read concerning them makes them seem supportive, or at worst apathetic towards Maximilian. Not to mention, they had a lot of problems of their own what with the ongoing Caste War with the Mayans.Diaz could probably keep control of the South and with US support force a settlement for an independent southern Republic (greatly resembling Mexico during the Porfiriato). Not sure where the border would be, but Yucatan and most of Tuhauntapec for sure, probably all Oaxaca to since Juarez drew a lot of support from there even when it was under French occupation.