They form from the fragments of lineage - bonded societies that merge , and their only claim to social ties is the land they occupy .
Land - bonded societies are strictly agrarian , excluding inherently nomadic pastoralists from society .
pastoralists form from the fragments of lineage - bonded societies that merge , and pastoralists ' only claim to social ties is the land they occupy .
Land - bonded societies are strictly agrarian , excluding inherently nomadic pastoralists from society .