User blog comment:Ace009/Wikia's Vision of the Year 2100/@comment-4740744-20161222033805

Personally, I believe Belgium will almost certainly have split up by 2100 (unless it is all part of a United States of Europe?). Georgia may also completely fall to Russia.

This is on more shaky ground, but if Quebec gains independence, the rest of Canada would either fracture completely, or alternateively, join the United States (the most likely to join the US would probably be British Columbia).