History is often taught as if political order followed a single European arc—from tribal fragmentation to feudal monarchy to centralized nation-state—while Africa appears governed by tribe rather than ...

Analysis of kinship systems. Alliance of integration ; Variations in social differentiation and integration : a speculation ; Intimate-kin groups ; Method ; Presentation of results of analysis of ...

While the capability for organisms to work together is by no means novel, humans possess an unparalleled capacity for cooperation that seems to contradict Darwinian evolutionary principles. Humans ...

The first institution we experience in life is family. As long as humans have existed, they have gathered in groups in order to survive—to pass down knowledge, lend protection, and form bonds. Not ...