Wal-Mart is the largest retailer in the world. It is also the largest corporation and private employer in the United States.

(Yes, in England it might feel as if Tescos is, but Wal-Mart is way ahead of them. In the U.S., Wal-Mart Stores, Inc. operates more than 4,300 facilities including Walmart supercenters, discount stores, Neighborhood Markets and Sam’s Club warehouses.
Internationally, Wal-mart operates more than 4,000 additional stores in 15 markets worldwide, including Argentina, Brazil, Canada, Chile’, China, Costa Rica.)