One of the first places that Dianetics caught on, after the US, was Australia.

I have met some of the founding Dianeticists and Scientologist from Australia and they are pretty incredible people. Getting on in years now - all of them at least in their 70's - they forged the way to making Dianetics and Scientology a reality in that country.

Of course we now have Bulgarian Dianetics, Arabic Dianetics, Macedonian Dianetics not to mention Vietnamese and Sinhalese Dianetics with plans to translate it into every language on earth - but in 1950 it was only in English and so English speaking countries were the first to have the opportunity to study and practice Dianetics at least in the early 50's.