It's a nice map, the POD must be recent because the differences are subtle.
1. Panama doesn't appear to be American, so I'm guessing the Ditchdiggers don't win the World Series and no UP to be the doormat of SEC football.
2. Guyana? Heck of a name for British Guiana and neither it, TT (Trinidad and Tobago), nor any of the islands appear to be in the West Indies Union. So that would mean no RWIN (Royal West Indies Navy) or RWIAF (Royal West Indies Air Force) to make names for themselves on TLC's "Drug Smugglers".
(I was in a bar in New York when HMWIS "Belize" was making a port visit, it was just after "Drug Smugglers" premiered. A bunch of sailors from the ship came in, and well once the women in the bar realized who they were... Well let's just say those sailors had a very good time in New York.)
3. Brasilia??? Like Dom Pedro VI is ever going to move the Imperial capital inland. No beach access for you know who, and with the capital away from the sea it is farther from Angola and Mocambique.
4. Paraguay? Looks like they unpartitioned it like Poland. I'm just having a hard time picturing Paraguayan nationalists pining for a lost homeland and working to reunite it. That may be ASB-ish.
5. Bolivia cut off from the sea? There's a war waiting to happen...