I'm trying to learn German at the moment, and it's fascinating seeing the similarities between the languages, and the things we used to have in common but got dropped or modified in English.
What do you mean by this? French is spoken differently with different dialects over the world - eg. Quebecois French is not the same as France French. And while French may be one of the roots of English, there are also French words with their roots in English. It's all a mishmash.
No such institution exists for the English language.