Chapter 1 Notes
Chapter 01 - New World Beginnings---33,000 B.C.-A.D. 1769. ?I. The Shaping of North America 1. 225 million yrs. ago supercontinent 2. Mountains-- Appalachians pre separation, all others after making them ?American? mountains. 3. Canadian Shield- NE corner of Americas, maybe first above sea level 4. Ice Age- 2 million yrs. ago--2 mile thick ice, Canada, N. America 5. Glacial action eroded Canadian Shield II. Peopling the Americas 1. The Land Bridge-- Sea level dropped because of glaciers exposing a land bridge. ? ? Bering Sea between Siberia and Alaska 2. Nomadic hunters following migratory game herds 3. Ice Age ended, glaciers melted, land bridge under water--10,000 yrs. ago 4. When Europeans arrived in 1492-- 54 million people lived in the Americas.