Culinary Cannabis

There is proof that at one time all people on earth spoke a single language. One such proof is the word No , no means noin many languages more over shaking of the head means no moving your head up and down means yes, this is even true in the animal kingdom, but what happen why did all the languages split up and now we have a hard time communicating with each other.

Was it really because of some tower to heaven in Babylon or was it something else what info was lost, what all the answers to our universe lies in finding the answer to this one question what happen to our common language.