The Neo-Terran Caste system is how the neo-terran empire manages new frontiers and colonies. It was invented and enforced by Drusus V. It gave the neo-terran government full control of where people lived and worked.
These planets are where most citizens of the neo-terran empire live. Urban worlds are where workers are born and raised. When another planet needs more workers or a colony needs to be established, the government pulls family units at random to fill the demand. These worlds are also where all of the research, accounting, banking and administrative tasks are done. Urban worlds can have up to one trillion inhabitants, and the minimum population of a planet to be considered an urban world is 15 billion.
These planets are where everything from pans to battleships are produced. Moderately populated and closely governed, these worlds are designed to be as efficient at production as possible.
The most common type of world in the Neo-Terran empire, Rural Worlds are where Food, Metals, energy and any other basic resources are produced. Rurual Worlds Usually have between 100,000 to 50,000,000 people.