Precolumbian dating back to

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In any case, artifacts have been found in both North and South America which have been dated to about 10,000 , and humans are thought to have reached Cape Horn at the southern tip of South America by this time.All theories agree that the Inuit and related peoples arrived separately and at a much later date, probably around the sixth century, moving across the ice from Siberia into Alaska.Many people deny all evidence of the existence of hemp in the New World before Christopher Columbus' arrival.However, there are many examples of fabric, yarn, clothes and bags made of this fibre, which reveal how widespread cannabis was among pre-Columbian indigenous tribes.The the UNESCO World Heritage Site, is an archaeological site, called Las Bolas on the Diquis Delta, is located in Palmar Sur in the Osa region of Puntarenas that has an assortment of over three hundred petrospheres dating back to 300 AD.

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Astronomy and the notion of human observation of celestial events would become central factors in the development of religious systems, writing systems, fine arts, and architecture.Exactly when the first group of people migrated into the Americas is subject to much debate.One view is that the earliest people were of the Clovis culture, with sites dating from some 13,500 years ago.It was basically used to make fabric, sandals, fishing nets, ropes, mats and baskets, although it was also used in rituals and medicine.Another site that has produced pre-Clovis remains is the Meadowcroft Rockshelter in Pennsylvania, dating back to 19,000 BP.

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