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Paleo Indians - the first Americans who crossed from Asia into North America sometime between 38,000 and 10,000 BC Berginia - Land bridge from last ice age Agriculture revolution - 10,000 years ago climate got warmer so everyone started farming Native Americans - Decendants to paleo indians. Over 650 groups Mesoamerica - Olmecs mayas toltecs and aztecs Olmecs - First great Toltecs - Traders Mayas - Farners + raiders Aztecs - 5 million popukation. Conquered by spanish empire North American tribes - Adena, anasazi, hopewell, and mississippians South American tribe - Incas Incas - Peru. 12 million empire. 1530's conquered by spanish East-west trade - Portugal, Spain, French, England, Dutch were the five groups for the exploration into the Americas The trade route from Europe to Asia All sea trade route - An alternate trade route from England to Asia Portugal found this trade route Portugal - Portugal found the All Sea trade route Portugal was the center for exploration Prince Henry - Portuguese prince who started a school for sailors and sponsored early voyages of exploration Bartolomeu Dias - Portuguese explorer who rounded the tip of Africa