The following statements about John Collier, Roosevelt's commissioner of Indian affairs, are true:
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He promoted legislation that restored the rights of Native American groups to elect tribal governments.
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He was influenced by the work of twentieth-century anthropologists.
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He drew heavily on the concept of cultural relativism.
The statement "He urged Native Americans to assimilate as quickly as possible" is not true, as Collier opposed such assimilation and instead supported policies that respected Native American cultures and sovereignty.