Quick question about evolution.?

You see language is actually a very complex thing. I don't think they've tested this because it would be very inhumane, but if you had two newborn children, and you put them in a room, and didn't teach them anything, than would they create a language. It is umed that they would find ways to communicate. We know that all animals have a means of communicating, but humans are the most complex of them all. So just saying a god created the languages is actually quite incorrect. If god created human life, than he would have just created all the humans to speak the same language.