Planet of the Apes
The year is 3978. Human civilization destroyed itself in a nuclear war letting apes to become the dominant race. Now they stand on the top of the evolutionary chain. Their society consist of orangutans, gorillas, and chimpanzees. The remaining humans live their lives on a primitive level even without the ability of verbal communication.
My book is fiction. I further developed the idea of this apocalyptic situation. I made this book as if it was made by the apes for their children as a history book.