Maybe in order to understand mankind we have to look at that word itself. MANKIND. Basically, it's made up of two separate words mank and ind. What do these words mean? It's a mystery and that's why so is mankind.
First Walt Disney production fully animated by the Xerox process for transferring pencil drawings to cells. This was largely because it was considerably cheaper to test the process in a short film as opposed to a full length feature.
Much of the animation was later re-used for the elephants in The Jungle Book.