Because there was no one to set rule to the peoples, and because of this, everyone possessed the same amount of skill, and women and men were treated equally
State Systems in America Were Largely Tribal.
The chants can be sung by using six-note patterns called hexachords. Gregorian melodies are traditionally written using neumes, an early form of musical notation from which the modern four-line and five-line staff developed. Good luck!!
12 inches=1 foot is the answer I believe.