I can't say for sure, but I think this is more of a DC editorial conceit - DC has always used fictional city and country names in the comics and cartoons - Metropolis, Gotham, Central City, Bialya, etc. - as opposed to Marvel who mostly stick to real-world locations, with some exceptions (Latveria!)

In 1944 the U.S. government wrote a sabotage guide for people in fascist occupied countries. It includes a section on how managers and office workers can slow down operations.

It has been declassified and you can read and download it here:
www.gutenberg.org/files/26184/...