Because many of the tribes that inhabited the great basin area had retained what archeologists refer to as the archaic life style, they created music that was very complex, which some scholars suggest may be due to centuries of development.

That statement is False.
The music that created in the past Great Basin area was never really as complex as the music that we create in the modern period.
The creation of complex music really needs to be supported with strong development in creativity and intelligence, which did not exist during archaic period.

It all depends on the individual