In the novel Divergent, every person has to choose between five factions and live following it's values. Each faction is dedicated to the cultivation of a particular virtue.

Abnegation: The faction that values selflessness in the service of others. These are ones who do community service.

Erudite: The faction dedicated to knowledge, intelligence, curiosity, and astuteness.

Dauntless: The faction dedicated to courage, bravery, and fearlessness.

Amity: The faction who values peace above else. The ones who try to make everything peaceful.

Candor: They are known to value honesty and believe in the principle that openness would lead to a more perfect society.

Pocahontas shows that she would be really peaceful. She tries to single-handedly bring peace between the British and Native Americans. And perhaps the fact that the symbol is a tree changed my mind. I associate Pocahontas with trees.

AprilGhost said most of it. Her whole character just screams peacefulness

Actually very difficult to pick! She's also intelligent and brave.