Legal systems have evolved to cover the transactions and disputes which arise over the possession, use, transfer and disposal of property, most particularly involving contracts. Positive law defines such rights, and a judiciary is used to adjudicate and to enforce.
In his classic text, "The Common Law", Oliver Wendell Holmes describes property as having two fundamental aspects. The first is possession, which can be defined as control over a resource based on the practical inability of another to contradict the ends of the possessor. The second is title, which is the expectation that others will recognize rights to control resource, even when it is not in possession. He elaborates the differences between these two concepts, and proposes a history of how they came to be attached to individuals, as opposed to families or entities such as the church.
According to Adam Smith, the expectation of profit from "improving one's stock of capital" rests on private property rights, and the belief that property rights encourage the property holders to develop the property, generate wealth, and efficiently allocate resources based on the operation of the market is central to capitalism. From this evolved the modern conception of property as a right which is enforced by positive law, in the expectation that this would produce more wealth and better standards of living.