I found out exactly how big Wal-mart is the other day.

Wal-mart employs 940,000 people. Wow. That's a heck of a lot of people. As a point of reference, that's more people than in Delaware (740K), Montana (880K), Vermont (590K), North Dakota (630K), or South Dakota (738K). It's about as many people that live in Rhode Island.

Imagine having that kind of workforce. Imagine the wealth. In his time, Sam Walton wasn't doing so bad (he was the richest man in the world). His kids aren't doing so bad either:
Keep in mind they are all in the top 12 richest people in the world. That's downright amazing. In his first job as a retail clerk in J.C. Penney's, his manager said to Sam Walton that he was not cut out for retail (and the only reason why he was kept was because he sold so much). That was perhaps one of the most wrong things ever said. Sam Walton made a name for himself by undercutting the competition; selling more at a lower price to turn a bigger profit. He was famous for it.

Even though his company is criticized for its business practices, it remains one of the largest commercial successes of the twentieth century.

Sources: US 2000 census, Forbes magazine