Answer: Amazon.com, Inc
Amazon.com, Inc. is an American-based multinational electronic commerce company. Headquartered in Seattle, Washington, it is America's largest online retailer, with nearly three times the Internet sales revenue of the runner up, Staples, Inc., as of January 2010.
Jeff Bezos founded Amazon.com, Inc. in 1994 and launched it online in 1995. The company was originally named Cadabra, Inc., but the name was changed when it was discovered that people sometimes heard the name as "Cadaver." The name Amazon.com was chosen because the Amazon River is the largest river in the world, and so the name suggests large size, and also in part because it starts with 'A' and therefore would show up near the beginning of alphabetical lists.