Well, no. I mean kind of. These grain-farming Cucuteni were squeezed out by the Kurgan culture, tall pastoralists coming from the East (that culture became the

Well, no. I mean kind of. These grain-farming Cucuteni were squeezed out by the Kurgan culture, tall pastoralists coming from the East (that culture became the indo-europeans, us), the process possibly assisted by a few hundred years of drought. Ordinarily, the farmers had food surpluses, though having all the bread you can eat is not the same as having all the meat, admittedly. Your nomadic herding warriors leave graves behind - Kurgan - as well as distinctive pottery, as clues to the general area they were being nomadic in, which was initially elsewhere while the Cucuteni were thriving. I don't think maintaining slaves at a distance works as a concept.