Latvia parts of the Russian Empire, which may have been influenced by the Protestant religion of the inhabitants. World War I devastated the territory of what became the state of Latvia, and other western parts of the Russian Empire. Demands for self-determination were initially confined to autonomy, until a power vacuum was created by the Russian Revolution in 1917, followed by the Treaty of Brest-Litovsk between Russia and Germany in March 1918, then the Allied armistice with Germany on 11 November 1918. On 18 November 1918, in Riga, the People's Council of Latvia proclaimed the independence of the new country, with
Henry of Latvia Henry of Latvia Henry of Latvia (, , , ; before 1188, Magdeburg, Landgraviate of Thuringia – after 1259 in Papendorf, Livonia, currently Rubene, Kocēni parish, Kocēni Municipality, Latvia), also known in the English-speaking world as Henry of Livonia, was a priest, missionary and historian. He wrote the Livonian Chronicle of Henry which describes the evangelization of the regions which are now part of Estonia and Latvia during the Northern Crusades. The chronicles say that Henry was a Catholic priest who witnessed most of events described. Henry is thought to have been born between 1180 and 1188. Henry was probably