This is a map I did for [link]
who has an alternate Star Trek TL ( located here [link]
). It's his Star Trek World of the Future: there's a united Earth government, but it's apparently a fixup sort of thing, with different states and groupings joining at different times and under different conditions, rather than a standardized arrangement like the OTL USA. The map shows the various states, federations, etc. under the Aegis of the world government.