Which term encouraged American expansion in the West beyond the
Mississippi River?

Manifest Destiny

Manifest Destiny, a term coined by journalist John O'Sullivan in 1845, was a driving force in 19th century America's western expansion—the era of U.S. territorial expansion is sometimes called the Age of Manifest Destiny.

Explanation:

Brainliest Plz?

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".

raw information is your answer

~courtney