Spam is derived from Shoulder Pork HAM. It is a canned precooked meat product made by Hormel Foods Corporation, first introduced in 1937. Spam that is sold in South America, North America and Australia is produced in Austin, Minnesota and in Fremont, Nebraska. Visit http://en.wikipedia.org/wiki/Spam_%28food%29 for more details.
'S'houlder 'P'ork h'AM' (SPAM) was first introduced in 1937. hormel makes SPAM in Austin Minnesota and there is also a plant in Denmark licensed to make SPAM. It was popular during wartime because it didn't spoil easily.