THE AMERICASAND THE COLUMBIANEXCHANGE

THE AMERICASAND THE COLUMBIANEXCHANGE

AGENDA

• • • AmericanColumbianExchange
    • Discussion
    • Writing time
    1. Marks Chapter3, pgs. 67-86
    2. Quiz#5 dueWed, Sept 25
    3. medium writingassignment due nextThurs Sept 26 at11:59 pm

EXPLORATION AND SETTLEMENT OF THEATLANTIC ISLANDS

• • • Portuguese exploration in theearly 1400s = discovery ofislands near West Africa
    • Mild climate = wheat andsheep

EXPLORATION AND SETTLEMENT OF THEATLANTIC ISLANDS

• • • Portuguese exploration in theearly 1400s = discovery ofislands near West Africa
    • Mild climate = wheat andsheep (altered environment)
    • Good for sugar
    • Enslaved natives for laborturned to Africa when theydied off or escaped

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

• • • Disrupted indigenousplant life
  • • livestock compactedsoil & ateplants
    • Cut down treesfor timber&fuel
  • • Disrupted ecosystems morevulnerable toinvasivespecies
  • • Newly cleared landOldWorldweeds expanded everywhere
  • • Positive side:
  • • rootsanchor soil
    • prevent wind/rainerosion,
    • protectsoil fromsun
    • providefood for grazers
    • disappear after stabilizing soil

“Englishman’s Foot” (only grows where Europeans trod)

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