After a property has been valued by at least one person and a boundary has been established containing it, then control becomes possible.

Control is nothing more than the exercise of ultimate decision making authority over a property.

The owner is considered "sovereign" over what he owns.

What does this mean?  It means that there is no higher authority.  The sovereign can do no wrong with respect to his own property.  He need not appeal to anyone other than or above himself with regards to the disposition or use of his property.

As an owner, he may rightfully make any ultimate decision he pleases concerning anything he owns, and he cannot be morally wrong in doing so.

Control always involves two elements:

1. Authority, and
2. Responsibility

If a man may rightly make any decision he pleases concerning a property, he is obviously is the authority over that property. This is what ownership means.