Because time is a social construct. It was only created when civilization was created. Since there was no one to create time in the beginning of Earth we had to create it as far back as we could. So basically science as stuff created time to help people. Time wasn't a thing back then. It only became a thing when people became a thing.
Hope this Helps!
I believe the answer would B
Answer: All of the answers are correct
Explanation:
<span>Eras and chronology are significant because they let us know when important</span>
