What term describes a situation where one company controls an entire industry and is so big and powerful that all of its competitors are destroyed?

answer:

the world will end is what that means

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".