The submarine sandwich – popularized by small sandwich shops from coast to coast usually bearing the name of a national chain – has to be the most frequently store-bought sandwich in the country.
Though it might be difficult to make the connection from lesser mass-marketed versions, its roots are Italian-American. The sub in its various similar forms and dissimilar names was created by Italian-American immigrants in the northeast in the early part of the last century.
Source: http://www.examiner.com/
