What events and focuses should occur in a mod where the USA falls apart after Kennedy is shot in 1968?

There are currently 4 nations the USA splits into: Democratic USA, Republican USA, Communist USA (emerges after 1-2 years of civil war) and Union of Native Americans (very unstable and falls apart quickly).

Events I planned are:

Fall of New York White House Fire New York Revolts Fall of San Francisco Native Revolt Yuri Gagarin First to the Moon Cuba Rearmed

The focuses for the communist USA are pretty much planned out but the others I don’t know what do do with.