One of the central puzzles in the study of sociocultural evolution is how and why transitions from small-scale human groups to large-scale. hierarchically more complex ones occurred. Here we develop a spatially explicit agent-based model as a first step towards understanding the ecological dynamics of small and large-scale human groups. By analogy with the interactions between single-... https://www.spidertattooz.com/Coast-Guard-E7-Rating-Badge-Yeoman-YN-blue/