Tricolour (flag) orange-white-blue design of the Prince's Flag ("Prinsenvlag", predecessor of the flags of the Netherlands and Luxembourg), used from 1579 by William I of Orange-Nassau in the Eighty Years' War, establishing the independence of the Dutch Republic from the Spanish Empire. Though not the first tricolour flag, one of the most famous, known as "Le Tricolore", is the blue, white and red (whence also called "Le Bleu-Blanc-Rouge") flag of France adopted in the French Revolution. With the formation of French client republics after 1795, the revolutionary tricolour was exported and adopted more widely in Europe, by the Republic of Alba 1796
Flag of Germany German Empire retained black, white, and red as its national colours, with the tricolour previously used by the North German Confederation officially adopted as its flag in 1892. The black-white-red tricolour remained the flag of Germany until the end of the German Empire in 1918, in the final days of World War I. Following the declaration of the German republic in 1918 and the ensuing revolutionary period, the so-called Weimar Republic was founded in August 1919. To form a continuity between the anti-autocratic movement of the 19th century and the new democratic republic, the old black-red-gold tricolour was designated as