In general, during the 1870s, Supreme Court decisions "<span>a. restricted the scope of the Fourteenth Amendment" since many of them ruled in favor of states that tried to restrict the rights of the newly-freed slaves. </span>
The silk road gave people new places to explore and new things to trade. The silk road boosted trade.
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In economics there are four different types of market structures. They are as followed:
1) Perfect competition- This allows for businesses to compete against each other for consumers.
2) Monopoly- This is when one business or corporation corners a market. This occurs when a business is the only supplier of a good/service.
3) Oligopoly- This is when a small amount of businesses control a market/product.
4) Imperfect competition
In your question then, the correct answers are : Monopoly, perfect competition, and oligopoly.
What descriptions? Be more specific