Basically, we do not know whether there was just one kind of ape-man on earth around 1.5 million years ago—meaning that ape-men (in large groups) were all much the same from Africa to Indonesia—or whether there was one distinct species of Homo ergaster west of the Movius Line and another of Homo erectus east of it. Only further research will clear that question up. But we do know, without a shadow of doubt, that within the last million years distinct species of ape-men did evolve in East and West.
