This island group was one of the last discovered, and the farthest one settled by polynesian explorers?

Native Americans could become U.S. citizens if they gave up affiliation with their tribe.

Explanation:

After the First World War, participating Native Americans were granted citizenship for their service. Subsequently, on June 2, 1924, the Congress passed the Indian Citizenship Act.

Many Native Americans had previously obtained it through various Treaties, at that time about 125,000 were included.

They retained their tribal affiliations and the property rights of the tribe. Although they were recognized as "citizens" of the United States, the impact on their rights was minimal. Many tribes remained under the tutelage of the Government and the right to vote was slow to arrive in some states. It would demand decades before Native Americans were allowed to vote in all 50 states.