Answer:
it is that they were immigrants
Explanation:
i learned that in 5th grade
Agriculture plays a crucial role in the rise and development of civilizations, since it allows for there to be a "food surplus"--meaning that people other than farmers can spend time and effort developing new skills and practicing new trades.
All along<span> the the </span>west<span> and </span>south<span> coasts of </span>South America<span>, the </span>Andes<span> are a barrier to movement in interior. As a result, more </span>settlement<span> in </span>South America<span> has occurred </span>along<span> the eastern and northern coasts.</span>
