A group did one it defrauds at the expense of another human group. But those assaulted had to assume a warlike position and develop a historical clash, in which every side tries to extract so much cash since could, and properties, real estate, with the enormous power that decimates the enemy up to and including the limits of slavery.
More today per today, we do not know the one who is who, it differs for whom it is less benevolent.