Free cities have always existed in history since the beginning of our civilization, proving the benefits they entail to human beings. Robert H. Nelson talks about private community associations in the United States. He explains how they came to be and the role they have acquired in the life of American citizens who live among them. Nelson describes the benefits and freedom this private way of living has given them. He also talks about the type of government that has emerged from these types of associations and the relationship it has developed with the major public sector in this country.