These advances required sophisticated communication skills beyond those needed by chimpanzees. Congratulations to the following classes. Here are selected responses to this question. The expert's picks are identified with gold stars. Chimps evolved to communicate with each other and it was not necessary for their survival to learn to speak the human language.
Human evolution lead to a more advanced brain which lead to creating a much more intricate language.
The chimps' environment might not have changed or demanded as much from them so they did not need to learn the next step of communication. Our class thought that humans evolved one way and chimpanzees evolved another way. Chimpanzees however followed another path adapting to their indivdual needs. We think that chimpanzees did not evolve to speak because they never had the need to speak or because their way of communication did not need those sounds. We did a lot of research and found out why we can talk and make noises but animals can only make noises.