People who immigrated to the united states in the early 1800s were likely from which of the following countries?
austria
russia
ireland
italy

i need to see the answer to answer the question

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".