If business is now a global affair, then the export-import business is important, lucrative and necessary. An export-import agent is not a broker --- the agents are lower on the business totem pole.
Most properties are measured using a number and a unit of measurement. The unit of measurement is a standard amount. The number compares the property to that standard amount. This means a tree that is ten times as tall as a meter stick is 10 meters tall.
measurement. 1. determination of the extent or quantity of something. 2. the assigning of numbers to objects, events, or situations in accord with some rule. interval level measurement measurement of data on an interval scale.