How might history have been different if the cultures of europe and the americas had never come into contact ?

This is a fascinating question, and one can imagine any number of fantastic scenarios.  Larger and more modernist Native American societies in North America, the Aztecs or Incas with more mechanical cultures, meeting later European invaders on a more even footing.  It's pretty interesting, but the truth is things probably would not have been much different.

D) Johnson did not feel the same way Lincoln did about African Americans. Johnson was from the south and acted accordingly when it came to the passing of bills about African Americans.