Final answer:
The lawsuit between the Havasupai Indian Reservation and the Arizona Board of Regents revolved around land ownership and treaty violations. The Havasupai tribe received financial compensation as part of the settlement.
Step-by-step explanation:
The lawsuit between the Havasupai Indian Reservation and the Arizona Board of Regents was prompted by circumstances surrounding land ownership and treaty violations. The Havasupai tribe argued that the land was rightfully theirs under separate treaties, while the Arizona Board of Regents claimed ownership. The lawsuit ultimately resulted in a settlement, where the Havasupai tribe received financial compensation as part of the decision.