English has evolved steadily, driven by its users.
All the versions found today, British, North American, Indian, S African, Australasia and even EU/European are for now, mutually comprehensible. But they all evolve and it is possible that in a few hundred years they will be as different as Dutch, Danish, German, Swedish and Norwegian are today.
IMHO the reason that English has become the world's second language is there is no interfering Government Agency dictating what is right and wrong, what is allowed and what is not.
