2) H. Lee Scott Jr.President and CEO, Wal-Mart StoresWHY: Oversees a retailing empire that has potential to dominate the world.WHAT'S AHEAD: Global expansion.Lee Scott reigns over the world's largest company.That simple fact makes Scott, a Wal-Mart insider who rose through the ranks under the guidance of Sam Walton, a very powerful individual.Scott, 53, was hired in 1979 in the transportation-trucking-logistics

2) H. Lee Scott Jr.

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