Deducing Civilization from Primitive People

Suddenly I received a USB flash drive, which actually contained a civilization deduction game? Leo: Tell me, what would happen if I asked the leader in a primitive society and found that sulfur, saltpeter, and charcoal would make a big fire? Leo: What would happen if I told the Pope in classical times that God is a black man? Leo: Tell me, what would happen if I took five sesame seed cakes and two salted fish and started giving alms in the Middle Ages?