3 million in 1854 and 21million in 1900
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 correct answer is c hope I helped
