As with so many innovations, the supermarket's origins lie in the United States. Yet before theopening of the King Kullen store in New York City in 1930, several thresholds had to be crossed.Until this point shops had generally utilised a counter-service model. Customers would deliver theirorder in the form of a list to a shop assistant, who then fetched the desired items. (19) . So, ashopper simply stood and waited while the assistants did all the work.
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