the change in Spain policy affect American farmers in the west because they couldn't get water and They could not trade anymore .
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Answer:
A public good has two key characteristics: it is nonexcludable and nonrivalrous. ... Nonrivalrous means that when one person uses the good, it does not prevent others from using it. Markets often have a difficult time producing public goods because free riders will attempt to use the public good without paying for it.
Explanation:
