What does a journal written by frontier settlers most likely tell you about Manifest Destiny

It will probably tell you about hardships that the people had to face. The fact that not a lot of people actually became rich. How they had to give up there life to come to the west, for something that wasn't as great as people said it was going to be.

Probalbly how people thought the 19th century doctrine or belief that the expansion of the U. S. outside of our continent