How did herbert hoover get his nick name

Herbert HooverChief, Grand Old Man, His friends called him Bert, The Great Engineer, The Great Humanitarian

The latter nickname would later be used facetiously in reference to his perceived indifference to the hardships faced by his constituents during the Great Depression. However, the nickname dates back to 1921, when the ARA under Hoover saved millions of Russians suffering from famine.

Where is the map ? u can attach it when asking a question btw

“according to some school, two answers might be : the rise of vcrs or an end to television” i hope this you for what your looking for