Yes, I think the way you get around this is by generally describing the events without necessarily naming the protagonist countries in the central listing. Allow me to give an example, we could say that in our European Union there was a rush to colonise during the 16th to the mid-20th Century, and then countries can decide whether they were a part of that period or not and can then build in their country's lore the impact that that had and has on their country's standing. Similarly we can say that in the early 20th century two major world wars severely crippled Europe leading to the European Union, and we can mention that some of the countries were Allies and other Axis, again without needing to mention the countries. It would need more work of course, but that's my thinking.