Here's a response

I came to the understanding that in This Sacred Soil there are messages Chief Seattle is intentionally writing for the reader. For instance, throughout the document Seattle refers to two groups of people with two very different leaders. I assumed that these two groups of people originated in two totally different places by his usage of "Red Man" and "White man" as representatives of each group. My reasoning for this was simply because each group of people is completely uniform, each person is the same/similar. The red man leads his red people, the white man leads his white people. "There is little in common between us". When the white man and red man intermingle a low-key reference to cultural diffusion arises. Seattle also references the idea of a community exiling another. As the red people are "ebbing away like a rapidly receding tide that will never return", the white people are coming into power, beginning to inherit the red people's land. I believe references to cultural diffusion and the power/weaknesses of a society are written behind the words of this document.

"There is no death, only a change of worlds."