The author's discussion of the Pow wows shows how the indigenous culture is rich and must be preserved, even if it follows the evolution of society.
We can arrive at this answer because:
The author shows how the Pow wows are very beneficial gatherings for the native tribes.
He reveals that these meetings are moments of celebration, where the native culture is presented, respected, and admired.
He also claims that the Pow wows have changed over time, following social evolution, but that they maintain traditions efficiently so that the culture is not lost.
This shows the reader how indigenous traditions are rich and can be very useful, fun, and important not only for the natives, but also for other citizens who recognize the importance of the tradition.
