History matching game?

Question

Causes:
1.Great Ice Age
2. Corn cultivation
3. New sailing technology/ desire for spices
4. Portugal creates sugar plantations on Atlantic coastal islands
5. Columbus's 1st encounter w/ New World
6. Native Americans' lack of immunity to smallpox, malaria, etc.
7. Spanish conquest of large quantities of New World gold/ silver
8. Aztec legends of returning god, Quetzalcoatl
9. Spanish need to protect MX vs. French/ English enroachment
10. Franciscan friars desire to convert Pacific coast Indians to Catholocism

Effects:
A. Rapid expansion of golbal economic commerce/ manufacturing
B. European voyages around Africa to reach Asia
C. Establishment of Spanish settlements in Florida & New Mexico
D. Exposure of "land bridge" between Asia & North America
E. Formation of chain of mission settlements in CA
F. Global exchange of animals, plants, and diseases
G. Formation of large, sophisticated civilizations in MX &S.America
H. Cortes relatively easy conquest of Tenochtitlan..

I. Decline of 90% in the New World Indian Population
J. Rapid expansion of African slave trade...


Haha, I know it's a lot, but whatever comes to mind without so much thinking, thanks. Don't say, do your own homework, because it's review and not to be turned it. Test tomorrow. Thanks so much!

Oh, and I already did most of it too BTW. Thanks again!

Wow, you're pretty much wrong, but nice try--I still think there's no best answer, so I'm putting this to vote as such. Sorry!

Wow, you're pretty much wrong, but nice try--I still think there's no best answer, so I'm putting this to vote as such. Sorry!

Darn it, I hit the wrong things and now it's on extended expiration--whatever.

Answer 1

The ice age caused the global exchange of animals, etc.