Is there a map of Earth somewhere that shows the various countries that exist during the 24th century? I know it's called United Earth, but I'd imagine it's still divided up into various countries. The ones I've heard mention of are USA, Canada, and France but what others exist at that time?
The best actual map I've been able to find of 24th-century Earth is this rather poor-quality one from the DS9 episode Paradise Lost:
But Memory Alpha tells us a few things about what countries existed at the time:
Even after United Earth was formed, many nation-states and confederations of Earth retained their individual identities. These included ...
The African Confederation, a political entity with member states including Somalia, in which Geordi LaForge was born in the 24th century. It was preceded by the United States of Africa, but that was a country in the 23rd century.
The United States of America, which still existed as a political entity in the 24th century according to the episode Imperfection from Star Trek: Voyager.
... and in a less clear category ...
Canada, a country in North America which was a tourist destination in the 24th century. It's not clear whether its borders are the same in the 24th century as today, nor whether it's a political entity or just a geographical area.
Russia, a country straddling Europe and Asia, where Worf spent some of his childhood in the 24th century. Again it's not clear whether its borders are the same in the 24th century as today (I wonder whether it includes the Crimean peninsula?), nor whether it's a political entity or just a geographical area (as in fact it used to be until the dissolution of the USSR).
This is a screenshot of the New Atlantis Project that Picard was reviewing in the episode Family. Perhaps if Picard chose to live below the sea with Louis rather than back on the Enterprise, the Earth would have another subcontinent.