To form a common policy decision with the Nobility strengthens the hoarding power of the aristocracy and keeps the ideas of chivalry alive. This way, England can rely on an early noble guard and a stronger Nobility. Furthermore, it benefits from the expertise of established castle building enterprises.
This is a policy decision for England, giving +2 attack to knightly units, as well as cheapening their castles from 850 stone to 638 stone, or just under the standard cost. It also immediately upgrades Knights to Royal Knights.
Available to: England
Researched at: Town Hall
Cost: 50 Food, 100 Florins