What type of map would you choose to find the borders between countries? why?

A political map

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answer; ///i believe that the correct answer is (a) the great depression

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".