Which character reassured the importance of learning the ways of the "bilagaanaa"?

The character who reassured the importance of learning the ways of the "bilagaanaa," which refers to non-Native Americans, is indeed Ned's uncle. This character plays a crucial role in conveying the significance of understanding and navigating both Native and non-Native cultures. By emphasizing the necessity of learning the ways of the "bilagaanaa," he highlights the duality of identity that the characters in the story must navigate. This reinforcement serves to prepare the younger generation for the complexities of a world that intertwines both cultural backgrounds, thus fostering resilience and adaptability in them.

In contrast, other characters might focus on different personal journeys or conflicts, making their perspectives important in other aspects but not central to the theme of cultural learning in relation to the "bilagaanaa."