What was the rationale of the u. s. government for the particular geographic borders of the reservations for the southeastern tribes represented in the above map?

It was strongly believed  that the  land they were taking into consideration was undesirable, and  it was also bordering inhabitable land.

Besides it was also considered that the White settlers would not have any interest in encroaching into that specific area.

one way archaeology us understand the past is through the material objects it finds, allowing us to know what was being used, and when. for example a dig recently found a flute, believed to be the oldest musical instrument found to date.

i hope this

answer; earthquake;