The cultural change that resulted from an eight hour workday was that leisure times was "invented" people suddenly had more time as they were able to work for only 8 hours, they could spend other time doing other things.
Answer:
I would say we have better technology, so they can take part of the DNA and see when they were around. How long it's been since a dinosaur in the Triassic Era walked the earth.
Explanation:
Government regulation might be used to facilitate competition
