Dreikönigsbündnis
For most of 1815–1848, Austria and Prussia worked together and used the German Confederation as a tool to suppress liberal and national ambitions in the German population. In 1849, the National Assembly in Frankfurt elected the Prussian king as the Emperor of a Lesser Germany (a Germany without Austria). The king refused and tried to unite Germany with the Erfurt Union of 1849–1850. When the union parliament met in early 1850 to discuss the constitution, the participating states were mainly only those in Northern and Central Germany. Austria and the southern German states Württemberg and Bavaria forced Prussia to give up its union plans in late 1850.