system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does Great Britain compete together in the Olympics but separate for FIFA (eg. England, Scotland...)

Any legal/historical reasons?
gpt
Between 1863 and 1880 England, Scotland, Wales and Ireland created their own individual football associations with separate leagues.

Because this was before big organised international competitions (even before the modern Olympics was started) they have ended up with separate international teams, one for each association.