What is the significance of the terms "Apple" and "Uncle Tomahawk" discussed in "Uncle Tomahawk Hangs Around the Fort Until He Finds His Own Metaphor"? How do these terms affect the author personally?

The reader should explain that both of these terms are references to American Indians who are assimilated into white society. The former is described as someone "Red on the outside, white on the inside" (4), while the latter is the Indian version of the derogatory term "Uncle Tom" often used to describe a black person who seeks the approval of white people. The author is sensitive about these terms and the idea of assimilation in general because his grandparents endured forced assimilation at the Indian boarding schools.

Why did Big Umma refuse to let Gansworth's mother learn beadwork in "Big Umma Delivers a Quick Lesson in History and Survival"? How does this anecdote relate to her experience at the Indian boarding school?