Customers come at random times for salvage, photo, and tour guide requests, unless they are part of the story mode, then they will come at specific points in the game.
Scandanavia
europe
Australia
CHiCKENS!
india..
The part of the world where people came from. People have always used slang!
Immigrants come from any part of the world!
Persia
Switzerland, I think.
Mycenae, Greece.
There are many different types of Blue Tongues and they come from everywhere around Australia. The most common one seen in books is the Eastern Blue Tongue and it comes from around Sydney.