Who was the first to cross the railroad​

si barako come

Explanation:

kase Yun eh sorry ahahhahayab kamg Alam ok sana makatulong

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".