How are the Guianas different from the rest of the region
Yes it was once part of Guiana but they separated later on.
In South America. One of the smallest countries in South America. But it came from France.
Because it is a French Department. Kind of like America owns places in other parts of the world.
French Guiana (Guyane Française) is an old french colony. So, that's why they speak French there.