What are the major components of a Kingdom?

Mt 13:11
"He replied, "The knowledge of the secrets of the kingdom of heaven has been given to you,..."

There are four major components of a Kingdom;

1. A King who reigns
2. Domain-territory of which the King rule over
3. Citizen who lives in the Kingdom and who is totally submitted to the King
4. Laws that govern the Kingdom. Each law has benefits if they are obeyed and consequences if they are disobeyed.

Pearls of Wisdom