That’s factually untrue. 1984 takes place in Britain (now known as “Airstrip one”) which in the universe of the book is part of Oceania along with Australia, southern Africa and the Americas.

The other two superpowers are Eurasia (which as the name suggests is Europe less the UK and Ireland but with Asia) and Eastasia, which is South-East Asia more or less

https://en.wikipedia.org/wiki/Political_geography_of_Ninetee...