Two tribes come together -- an encounter which usually ends in violence -- but when early man learns to trade instead of fight, both tribes benefit.
➡ Subscribe: http://bit.ly/NatGeoSubscribe
➡ Watch all clips of Origins: The Journey of Humankind here: http://bit.ly/WatchNGOrigins
➡ ORIGINS: THE JOURNEY OF HUMANKIND AIRS MONDAYS 9/8c.
About Origins: The Journey of Humankind:
Hosted by Jason Silva, Origins: The Journey of Humankind rewinds all the way back to the beginning and traces the innovations that made us modern.
Get More National Geographic:
Official Site: http://bit.ly/NatGeoOfficialSite
About National Geographic:
National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.
When Two Tribes Collide | Origins: The Journey of Humankind