The US, UK, France, Australia, Soviet Union, Belgium, Brazil, Canada, China, Denmark, Greece, Netherlands, New Zealand, Norway, Poland, South Africa, Yugoslavia. That's only 17. I don't know the last three.
The US, UK, France, Australia, Soviet Union, Belgium, Brazil, Canada, China, Denmark, Greece, Netherlands, New Zealand, Norway, Poland, South Africa, Yugoslavia Germany, Austria-Hungary, and Turkey
