Board Thread:General Discussion/@comment-25703308-20150420202150/@comment-1916997-20150420225644

Like Utter said, they are just other worlds. And while they can appear similar to Earth, they stay in one time period, because they must stay in that setting for the stories that live there forever. Cruella's world is simply an Earth that is forever in the 1920's, and where all stories with a 1920's setting take place.