mass-pro·duceDictionary result for mass-produce
/ˌmasprəˈd(y)o͞os/Submit
verb
produce large quantities of (a standardized article) by an automated mechanical process.
"Henry Ford made his fortune mass-producing the Model T"
Interchangeable parts made it easier to produce certain products. Before mass production of interchangeable parts people had to either take their broken "item" to a specialist or throw it away. Interchangeable parts made it cheaper and easier to keep the item.