Answer:
C. urban centers
Step-by-step explanation:
Oklahoma had a mass migration out of the state during the Great Depression and the Dust Bowl years, causing the number of farms to decline. Farm workers moved to the cities in Oklahoma after World War II, and thus the tenant farmer system faded. Urban areas offered job opportunities to workers from farms. Rural areas had political voting power until 1964 when federal courts pursued the idea of “one man, one vote,” leading to redistricting.
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