Girl power! Mysterious ancient human society was run by a 'female elite' and lived in sprawling stone mansions ... The bodies were placed in sequential tombs over a 330 year period and spanned multiple generations. The finds reveal that a high degree of social differentiation and societal complexity existed in Chaco by the early 9th century. 'All societies are complex, but here we see a society with larger populations living in villages and cities and where major differences in status and wealth are evident,' Professor Kennett told MailOnline. ... The Chacoans, one of North America’s earliest complex societies, lived in...