Which two provinces broke away from russia and formed kingdoms that were hostile to the eastern slavs? a. mongolia and kiev c. luxembourg and moscow b. lithuania and poland d. latvia and siberia

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".