we no so little about the civiliazation because they were lost for many many years and evidence we have is that they had sewer systems and bathrooms they also had there building evenly apart
Answer:
A free good is a good that is not scarce, and therefore is available without limit. A free good is available in as great a quantity as desired with zero opportunity cost to society. A good that is made available at zero price is not necessarily a free good.
Explanation:
Advice- Try looking it up because it has all the facts and explanation..