Which of the following was not a major factor that helped the Chickasaw Nation economically recover after the Civil War?

The Chickasaw Nation raised revenue after the Civil War by leasing grazing land, issuing permits for tenant farming, and collecting taxes on cattle drives. Lead-zinc mining was associated with other parts of Indian Territory, not a major source of the Chickasaw Nation’s recovery. Therefore, “developing lead-zinc mines” was not a major factor.

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