I think it is false but let me know that my answer is not the right answer.
B. It hs only been in existence since the late 1800s.
It is true. Because no one wanted to take the rugged journey all the way across the united states, especially because there was no continental railroad yet.
You can grow very tired if you are not used to it at first. Later on in life your body should adapt to this change. I’ve read that even though we are told to sleep for 8-9 hours a day, those hours are meant to be separated through out the day. On the other hand, everyone’s body is different so it can vary between person. Hopefully this helps.
striking out at others because you are not strong enough