In 1862, King Wilhelm I appointed Bismarck as Minister President of Prussia, a position he would hold until 1890 (except for a short break in 1873). He provoked three short, decisive wars against Denmark, Austria and France, aligning the smaller German states behind Prussia in defeating his arch-enemy France. In 1871 he formed the German Empire with himself as Chancellor, while retaining control of Prussia. His diplomacy of realpolitik and powerful rule at home gained him the nickname the "Iron Chancellor." German unification and its rapid economic growth was the foundation to his foreign policy. He disliked colonialism but reluctantly built an overseas empire when it was demanded by both elite and mass opinion. Juggling a very complex interlocking series of conferences, negotiations and alliances, he used his diplomatic skills to maintain Germany's position and used the balance of power to keep Europe at peace in the 1870s and 1880s.