to capture rebel leaders and take away stores of ammunition
Lincoln did not attend high school. Rather, he had about eighteen months of formal schooling before heading out on his own. From that point onward he was self taught.
Hope this helped a bit :)
Answer:
The First one (Is what I got)
It promoted the (relatively) rapid diffusion of immigrants, language, and domesticated crops and animals. Those factors are examined in excellent detail in Jared Diamond's book, "Germ, Guns and Steel" which I highly recommend for anyone studying the development of world cultures. It's a long read, but well worth it.