How did the first americans get here
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Transcript of How did the first americans get here
Where did the water in the Bering Strait go?
Huge glaciers more than a mile thick
Extended as far South as Illinois and Ohio
Earth’s waters were turned to ice, dropping the oceans to hundreds of feet below current levels
Receding waters created a land bridge
Debate over Migration
1. One Migration across Bering Strait
2. *Series of migrations and means of arrivalWater travel and “land crossings”
What were the Paleo-Indians like?
Pursued large mammals Known as mega fauna Wholly mammoths Mastodons
Nomads Moved slowly following prey Small groups Goal was survival
Used fire Used tools made of stone
Lack of disease
Stopped hosting communicable diseases Small pox Measles Small incidences of tuberculosis
Physical isolation No contact with domestic animals such
as pigs and cattle Lost inherited immunities
The Wholly Mammoth and Mastodons
Stood 9 to 11 feet at shoulder
Weighed 4 to 6 tons
Long hair covered body