Which kind of scientist is best described as
someone who studies
the ancient ruins of
South America?

archaeologist

Explanation:

an archaeologist is someone who studies the ancient ruins of South America. They also investigate and look at artifacts that are ancient.  

Hope this helped a little!

answer; people where able to travel across the u.s.a faster than any other mode of transportation,travel time was about a week,from coast to coast

it should be a. song dynasty’s civil service examination system created an administrative bureaucracy manned by the landed aristocracy.