I know the player here did an excellent job, but it helps to research spies. It can reduce time and effort in finishing the quest. Not to mention, he NEVER researched the Hand Cart which can be so helpful in quick gathering of resources. The one who gathers resources real fast can have a better chance of defending themselves and their town in case of an enemy attack. Especially with an enemy that is fortified to the brim like the Khwarazm empire.
