I'm confused??? do you think you can help me

How can rereading a passage to clarify the meaning of a later one?

The great depression, which lasted throughout the 1930s in the united states, affected many people, and it had a devastating impact on an entire subset of the u.s. population. modernist writer john steinbeck wrote about the toll the depression took on these families, many of whom were forced to leave their farms and find other sources of income.

What is the author's purpose in both patrick henry's speech and thomas paines common sense