What fads gain popularity during the 1920s

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".

the influence of charles louis de secondant , baton montesquieu.

they made rome the dominant power in the mediterranean.