"Hershey's milk chocolate is the quintessential American chocolate bar. But in Milton Hershey's time, chocolate was mostly a special treat for the very wealthy. Milton grew up poor and was no stranger to going hungry. When he got a job washing dishes in an ice cream parlor, he realized how happy sweets made people--and how much he liked making people happy. Over the course of his career, Hershey failed to make many businesses profitable, yet ultimately...