What does “primitive” mean as it is used in paragraph 9?

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.

Imagination. experience. determination. trustworthiness.

Which two pieces of evidence support the idea that coal is underutilized? this was on study island about coal