I'm pretty sure this is wrong but my best guess would be John smith. You know, that guy from Pocahontas.
Although it's a bit counter-intuitive, Columbia actually never explored North America, instead visiting the other locations on this list instead. This lead to great discoveries but lots of suffering for the local inhabitants.
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An organized social class system with government..this also included permenatly set homes and shelters for an extended period of time
