Human Embassy

raise lumber yield

http://hero-civilization.wikia.com/wiki/Raise_lumber_yeild

raise stone yield

http://hero-civilization.wikia.com/wiki/Raise_stone_yeild

raise iron yield

http://hero-civilization.wikia.com/wiki/Raise_iron_yeild

raie food yield

http://hero-civilization.wikia.com/wiki/Raise_food_yeild

military strategy

http://hero-civilization.wikia.com/wiki/Military_strategy

military knowledge

http://hero-civilization.wikia.com/wiki/Military_knowledge

magic force

http://hero-civilization.wikia.com/wiki/Magic_force

magic protection

http://hero-civilization.wikia.com/wiki/Magic_protection

plunder

http://hero-civilization.wikia.com/wiki/Plunder

diligence

http://hero-civilization.wikia.com/wiki/Diligence