Concept
Version 15
Created by Boundless
Mixed Economies
![A mail truck](../../../../../../../../../figures.boundless-cdn.com/14571/full/small-usps-truck.jpeg)
A mail truck
Restrictions are sometimes placed on private mail systems by mixed economy governments. For example, in the United States, the USPS enjoys a government monopoly on nonurgent letter mail as described in the Private Express Statutes.
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