It's a colony even if it's legally part of France.
(Had to check: free movement does apply to Guianans, but in the other direction it's not part of Schengen)
It's a colony even if it's legally part of France.
(Had to check: free movement does apply to Guianans, but in the other direction it's not part of Schengen)
Ireland is not part of Schengen as well for example, it is because that is much harder to practically achieve for folks living on islands.
Ireland is not part of Schengen because the UK never was (and they wanted to keep the Common Travel Area).
France has only one citizenship, everyone holds the same French passport so everyone has the same freedom of movement within the EU.
It's not in Schengen, like most overseas territories in the EU, to limit illegal immigration into the EU (see Ceuta as well).
I don't thing the term "colony" holds. It is anachronic and refers to a system that no longer exists.
Guianans tend to get pissed off if outsiders suggest in any way that they are any different as a French region from l'Hexagone (the French mainland). Your banging on about colonies would not be well received there.