Is there multiple choice answers?
The Incas were an empire located in modern day <span>Peru. All the other choices were investigated in North America. Therefore, inca gold is your answer!
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The Mongols had a benevolent attitude toward foreign religions, or at least a policy of benign neglect. Their belief in Shamanism notwithstanding, the Mongols determined early on that aggressive imposition of their native religion on their subjects would be counter-productive.