What nations could have avoided partition or formed ahistorical federations, and become bigger than OTL but not too big that would lead to problems?
This is what I have in mind:
Sustainable
India-Pakistan-Bangladesh (non-partitioned India)
Indonesia-Malaysia federated state
Unsustainable
French West Africa as one country
Think Draka- aside from the Draka, you have a bunch of OTL nations becoming bigger for no reason like Gran Colombia surviving. Or think Kaiserreich where Argentina for some reason swallows up Uruguay. Except I expect actual reasons for why any proposed nations might be bigger.