Populating the Americas
- 1. Populating The Americas { Social Studies for 9th E.G.B. Teacher: Mauricio Torres
- 2. Early human migrations began when Homo erectus first migrated out of Africa over the Levantine corridor and Horn of Africa to Eurasia about 1.8 million years ago, a migration probably sparked by the development of language. Early Human Migrations
- 3. Modern humans, Homo sapiens, evolved in Africa up to 200,000 years ago. They reached the Near East around 125,000 years ago. From the Near East, these populations spread east to South Asia by 50,000 years ago, and on to Australia by 40,000 years ago, when for the first time H. sapiens reached territory never reached by H. erectus. H. sapiens reached Europe around 40,000 years ago, eventually replacing the Neanderthal population. East Asia was reached by 30,000 years ago. The date of migration to North America is disputed; it may have taken place around 14 millennia ago. Colonisation of the Pacific islands of Polynesia began around 1300 BC, and was completed by 900 AD. The ancestors of Polynesians left Taiwan around 5200 years ago. Taking over the world
- 4. Taking over the world
- 5. At some point during the last Ice Age, about 17,000 years ago, as the ice sheets advanced and sea levels fell, people first migrated from the Eurasian landmass to the Americas. These nomadic hunters were following game herds from Siberia across what is today the Bering Strait into Alaska, and then gradually spread southward. the Bering Strait Theory
- 6. Ice Age.- An ice age, or more precisely, a glacial age, is a period of long-term reduction in the temperature of the Earth's surface and atmosphere, resulting in the presence or expansion of continental ice sheets, polar ice sheets and alpine glaciers. the Bering Strait Theory
- 7. the Bering Strait Theory
- 8. • Pacific models propose that people reached the Americas via water travel, following coastlines from northeast Asia into the Americas. Coastlines are unusually productive environments because they provide humans with access to a diverse array of plants and animals from both terrestrial and marine ecosystems. Watercraft migration theories
- 10. The boat-builders from Southeast Asia may have been one of the earliest groups to reach the shores of North America. One theory suggests people in boats followed the coastline from the Kurile Islands to Alaska down the coasts of North and South America as far as Chile. Southeast Asians: Paleoindians of the Coast
- 11. Southeast Asians: Paleoindians of the Coast
- 12. The specifics of Paleo-Indians migration to and throughout the American Continent, including the exact dates and routes traveled, are subject to ongoing research and discussion. IMPORTANT INFO
- 13. Draw a world map and trace three of the possible routes used by our ancestors to populate the Americas. Paint each route with a different color. Write one paragraph explaining which one of those routes convinces you the most. Any answer is valid, as long as you give valid arguments Do this in a different sheet of paper and hand it in at the end of the class. Presentation counts, so do your best! Classwork
- 14. Classwork