How can the people themselves be a Pueblo and not the physical place itself?Explain

Paper details:

The Indigenous people of the Paso del Norte region were able to retain many of their traditions and culture (relative to other tribes in the US) in spite of the many efforts to rid them of their traditions and culture. Why does it matter if a person was from one tribe or another?

How can the people themselves be a Pueblo and not the physical place itself?

Uploaded the material given by my professor to help answer