@rrolo1
Dunno, but given the author's attention to detail early on, major improvements over the course of the series, and time spent on even more minor setup events, I suspect it's the latter and there was some pushing to finish. If so I'm bummed but also sympathetic, a lot of great series have gotten the axe with barely even the most minimal time to whip some sort of ending together. And if I'm realistic, it's a wonder that something like the 2nd Punic War even got this good a manga adaption at all stretching across 13 volumes. Even one more volume could have made a big difference, this is the first instance where I think the rushing genuinely is too bad since that Scipio first offered very generous terms and Rome was fine with that, then Carthage breached/turned it down is really important context for what happened later.
But sometimes it really can't be helped. Just a shame for such a surprisingly awesome rendition.
Edit to add: though again, this is all supposing that's being skipped. And it seems like it's setting up that way, but maybe instead it's just a tweak to have Hannibal be involved in the initial treaty too, and then he's going to get screwed by the politicians (which definitely did happen in general), then the final face off. With a bit of liberal time skipping, maybe that's just barely possible in a longer volume along with Zama. I think there's 7 chapters left. So like, peace, treaty, rebuff, that could maybe be rushed in a single chapter. Then five chapters for Zama and aftermath, and a final one for epilogue. I'm not going to spoil myself by looking at the raw again