I believe the answer is: <span>urged to leave and found it difficult to make a living.
Okies refers to the group of people that mostly consist of poor immigrants,that have to rely on farm-related jobs as their primary income.
Dust bowls destroyed many of the agricultural crops in that season and make okies' live became very difficult.</span>
A member of the lowest-caste Hindu group or a person outside the caste system. Contact with untouchables is traditionally held to defile members of higher castes.
