The proclamation of the German Empire, also known as the Deutsche Reichsgründung, took place on January 18, 1871 after the joint victory of the German states in the Franco-Prussian War. As a result of the November Treaties of 1870, the southern German states of Baden, Hesse-Darmstadt, with their territories south of the Main line, Württemberg and Bavaria, joined the Prussian-dominated "North German Confederation" on 1 January 1871. On the same day, the new Constitution of the German Confederation came into force, thereby significantly extending the federal German lands to the newly created German Empire.