Ancient Greece and ancient Rome
Explanation: quickest answer
May i know whats the question in this paragraph because i did not understand the question ill edit it as soon as i know the question behind this...!
Answer:
C. Humans have been on Earth for a very short amount of time
Explanation:
using process of elimination, insects were around before dinosaurs were so that takes away B and C, then humans have been on earth for around 200,000 years which definitely isn't hundred of millions so it's most likely C
