The fifth amendment protects people from having to

Protects citizens against "double jeopardy." This protection means that people cannot be put on trial or punished twice for the same crime. The Fifth amendment also says that people cannot be forced to be witness against themselves. ... It guarantees the right to a fair trial and the right to have a lawyer.

Explanation:

Protects people from being forced to incriminate themselves

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

on the morning of  july 21,  1861, general mcdowell ordered the  unionarmy to attack. it was on this hill that  confederate  colonel thomas jackson and his forces held back theunion  troops.