Moral altruism
they helped informed only by ethical consideration regardless of any rivalry between the teams. Moral altruism is the highest calling in altruism(helping others selflessly) the team did not consider that if they failed to provide shelter to the other team it would get some advantage over it.
I'm not 100% sure... but I would say B.
Answer:
Sulfur: gunpowder and medicines
copper: coins and jewelry; and in coins
diamond: drill bits and saws
Explanation: