Zardnaar
Deity
I wonder if there would be more conflict or less if countries with antagonistic tribes were broken up to reflect their traditional lands.
Probably more. I've seen a map where Africa is broken up along tribal lines. The states are to small and would lack resources to exist as viable nation's.
That's assuming the tribes would co exist peacefully. Ethnic lines might work better but the stronger tribes would still dominate one way or another.