How was it that the ""ghost dance"" brought the plains indians hope?.

A hope for peace

It was believed the dance would incite a great apocalypse and ultimately lead to a peaceful end of the white American expansion, the preservation of the Native American culture, and the return of the buffalo.

Explanation:

just need the points

explanation:

in 1897, pershing became a tactical officer at west point, and that's where he was given the nickname "black jack." pershing's first name is "john," for which "jack" is a nickname, and he was a white man who commanded black troops. hence "black jack".