What monotheism undoubtedly did was to make many people far more intolerant than before, thereby contributing to the spread of religious persecutions and holy wars. Polytheists found it perfectly acceptable that different people will worship different gods and perform diverse rites and rituals. They rarely if ever fought, persecuted, or killed people just because of their religious beliefs. Monotheists, in contrast, believed that their God was the only god, and that He demanded universal obedience. Consequently, as Christianity and Islam spread around the world, so did the incidence of crusades, jihads, inquisitions and religious discrimination.