In making trade, one establishes a currency.  Early settlers and trapper traders in America utilized trade beads as a form of currency.  To have technology that another group does not have, is power.  It was then: it still is today.  Keeping technology at cutting edge is a harder and harder feat in today’s world.

To bargain with a human being, one needs to establish their currency.  This principle is utilized in child rearing to making agreements between nations.  Supply and demand, really.  Establishing a currency:  do you know what your currency is?