John Steinbeck's the grapes of wrath tells about the struggles of

Those who lost their land during the Great Depression of 1930 to 1937. These dates are flexible.

It centers on one family, the Joad Family who have abandoned their life in Oklahoma to follow the trail to California where things had to be better, they thought. Turns out that California brought a whole new set of problems.

Answer: APEX answer is (Farmers)