Why do you think this is important to the native american community?

Keeping tribal affiliations, heritage and culture alive in their families and communities is a priority for many American Indians. 

This is especially true in Oklahoma, where indigenous people lived long before Europeans settled and, later, displaced tribes were concentrated in the mid- to late 1800s. Contributing to the loss of language, culture and traditions was the introduction of boarding schools, which served to assimilate native children into white Americ

i think that the quotes in paragraph 11 contribute to the development of ideas because it provides a good reasoning of the central idea of the text.