You're right. Almost every last Native American tribe - before Western Colonization - were still in the stone age. Meaning, they did not discovery metallurgy and were still using stone tools and wood tools. Sure, they had advanced mathematics and astronomy systems (Aztec). If the Aztecs had calmed the fuck down and become more peaceful/industrious, they would have created an amazing civilization that could have rivaled the Roman Empire. But, nope, they were still stuck in their violent wars, human sacrifice, etc. And eventually fell.
They were stupider than stone age people because they couldn't even invent the wheel.
Holy crap, you're right. They did not use the wheel until Western Civilization brought it to them.
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