Various causes combined to promote the growth of the place. The temporary removal of the Mart from Fuerth to Nuremberg under Henry III. doubtless gave a great impetus to the development of the latter town. Henry IV., indeed, gave back the rights of Mart, customs and coinage to Fuerth. But it seems probable that these rights were not taken away again from Nuremberg. The possession of a Mart was, of course, of great importance to a town in those days, promoting industries and arts and settled occupations. The Nurembergers were ready to suck out the fullest advantage from their privilege. That mixture of races, to which we have referred, resulted in remarkable business energy—energy which soon found scope in the conduct of the business which the natural position of Nuremberg on the south and north, the east and western trade routes, brought to her. It was not very long before she became the center of the vast trade between the Levant and Western Europe, and the chief emporium for the produce of Italy—the “Handelsmetropole” in fact of South Germany.
Nothing in the Middle Ages was more conducive to the prosperity of a town than the reputation of having a holy man within its borders, or the possession of the miracle-working relics of a saint. Just as St. Elizabeth made Marburg so St. Sebaldus proved a very potent attraction to Nuremberg. As early as 1070 and 1080 we hear of pilgrimages to Nuremberg in honor of her patron saint.