Because there is a difficulty in quantifying, putting in numbers, the value of community and cooperative organizations. So the conclusion is simple: If you can not quantify you can not measure and if there is difficulty in quantifying, there is the same difficulty in measuring.
The answer to this is A price fixing.
Price fixing is where sellers agree to sell a certain product around the same price.
-Seth
They had to hunt where the animals went so they followed the animals from place to place.and that is what nomadic means. Hope this helps you out a lot