According to a centuries-old legend set in Hamelin, Germany, the Pied Piper was hired by local residents in 1284 to rid the town of rats, which he did by charming them with music and leading them to the river to drown. When the citizens refused to pay him the agreed upon price, he exacted his revenge by charming away their children. Famous versions of the legend were immortalized by Goethe, Robert Browning, and the Brothers Grimm. What historic events may have inspired the tale? Discuss