to also control the church by naming both bishops and popes. The institution of the Justinian code was used, perhaps unscrupulously, by Frederick to lay claim to divine powers. In Germany, Frederick was a political realist, taking what he could and leaving the rest. In Italy, he tended to be a romantic reactionary, reveling in the antiquarian spirit of the age, exemplified by a revival of classical studies and Roman law. It was through the use of the restored Justinian code that Frederick came to view himself as a new Roman emperor. Roman law gave a rational purpose for the existence of Frederick and his imperial ambitions. It was a counterweight to the claims of the Church to have authority because of divine revelation. The Church was opposed to Frederick for ideological reasons, not the least of which was the humanist nature found in the revival of the old Roman legal system. When Pepin the Short sought to become king of the Franks in the 8th century, the church needed military protection, so Pepin found it convenient to make an ally of the pope. Frederick, however, desired to put the pope aside and claim the crown of old Rome simply because he was in the likeness of the great emperors of old, who tended to have a domineering role over the church, Caesaropapism. Pope Adrian IV was naturally opposed to this view and undertook a vigorous propaganda campaign designed to diminish Frederick and his ambition. To a large extent, this was successful. Economic policy Frederick did little to encourage economic development in Germany prior to the autumn of 1165. In that year he visited the lower Rhineland, the most economically advanced region in Germany. He had already travelled to northern Italy, the most economically advanced region in the Empire, three times. From 1165 on, Frederick pursued economic policies to encourage growth and trade. There is no question that his reign was a period of major economic growth in Germany, but it is impossible now to determine how much of that growth was owed to Frederick's policies. The number of mints in Germany increased ninefold in the reign of Frederick and his son Henry, from about two dozen mints at the start of his reign to 215 mints in 1197 and from a mere two royal mints to 28. Frederick himself established at least twelve royal mints, including those of Aachen,