THE AMERICASAND THE COLUMBIANEXCHANGE
AGENDA
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- AmericanColumbianExchange
- Discussion
- Writing time
- Marks Chapter3, pgs. 67-86
- Quiz#5 dueWed, Sept 25
- medium writingassignment due nextThurs Sept 26 at11:59 pm
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EXPLORATION AND SETTLEMENT OF THEATLANTIC ISLANDS
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- Portuguese exploration in theearly 1400s = discovery ofislands near West Africa
- Mild climate = wheat andsheep
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EXPLORATION AND SETTLEMENT OF THEATLANTIC ISLANDS
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-
- Portuguese exploration in theearly 1400s = discovery ofislands near West Africa
- Mild climate = wheat andsheep (altered environment)
- Good for sugar
- Enslaved natives for laborturned to Africa when theydied off or escaped
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https://upload.wikimedia.org/wikipedia/commons/thumb/a/ad/Philip_II%27s_realms_in_1598.png/440px-Philip_II%27s_realms_in_1598.png
SPANISH RED | PORTUGUESE BLUE | 1598
Biological Exchange Impact–PLANTS
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- Disrupted indigenousplant life
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- livestock compactedsoil & ateplants
- Cut down treesfor timber&fuel
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- Disrupted ecosystems morevulnerable toinvasivespecies
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- Newly cleared landOldWorldweeds expanded everywhere
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- Positive side:
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- rootsanchor soil
- prevent wind/rainerosion,
- protectsoil fromsun
- providefood for grazers
- disappear after stabilizing soil
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“Englishman’s Foot” (only grows where Europeans trod)