did not translate into a new political, bureaucratic, or administrative apparatus. While many spoke about the need for a constitution, no such document appeared from the discussions. In 1848, nationalists sought to remedy that problem. Economy and the customs union Several other factors complicated the rise of nationalism in the German states. The man-made factors included political rivalries between members of the German confederation, particularly between the Austrians and the Prussians, and socio-economic competition among the commercial and merchant interests, and the old land-owning and aristocratic interests. Natural factors included widespread drought in the early 1830s, and again in the 1840s, and a food crisis in the 1840s. Further complications emerged as a result of a shift in industrialization and manufacturing; as people sought jobs, they left their villages and small towns to work during the week in the cities, returning for a day and a half on weekends. The economic, social and cultural dislocation of ordinary people, the economic hardship of an economy in transition, and the pressures of meteorological disasters all contributed to growing problems in Central Europe. The failure of most of the governments to deal with the food crisis of the mid-1840s, caused by the potato blight (related to the Great Irish Famine) and several seasons of bad weather, encouraged many to think that the rich and powerful had no interest in their problems. Those in authority were concerned about the growing unrest, political and social agitation among the working classes, and the disaffection of the intelligentsia. No amount of censorship, fines, imprisonment, or banishment, it seemed, could stem the criticism. Furthermore, it was becoming increasingly clear that both Austria and Prussia wanted to be the leaders in any resulting unification; each would inhibit the drive of the other to achieve unification. Formation of the Zollverein, an institution key to unifying the German states economically, helped to create a larger sense of economic unification. Initially conceived by the Prussian Finance Minister Hans, Count von Bülow, as a Prussian customs union in 1818, the Zollverein linked the many Prussian and Hohenzollern territories. Over the ensuing thirty years (and more) other German states joined. The Union helped to reduce protectionist barriers between the German states, especially improving the transport of raw materials and finished goods, making it both easier to move goods across territorial borders and less costly to buy, transport, and sell raw materials. This was particularly