What requirements must be given to the supreme court when asking them to review a case

In order for the case to be heard, four justices must agree to hear the case. This is known as the Rule of Four. If four justices vote to hear the case, then the court grants certiorari and it is placed onto the court's docket.

Explanation:

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain