When the Pilgrims landed in 1620, they established a system of communal property. Within three years they had scrapped it, instituting private property instead. Hoover media fellow Tom Bethell tells the story. There are three configurations of property rights: state, communal, and private property. Within a family, many goods are in effect communally owned. But when the number of communal members exceeds normal family size, as happens in tribes and communes, serious and intractable problems arise. It becomes costly to police the activities of the members, all of whom are entitled to their share of the total product of the...