Give two examples from history to show the impact

Give two examples from history to show the impact of technology on food availability.

Two examples of impact of technology on food availability
(i) The technique of cold storage and use of refrigerated ships boosted the export of perishable foods over long distances.
Meat exported from America, Australia and New Zealand could be sent to Europe where meat was not easily or cheaply available.
(ii) Faster railways, larger ships and lighter wagons enabled cheaper and quicker movement of perishable foodstuffs from far away farms to their final markets. Now the poor in Europe could add meat (even butter and egg) to their daily diet.