World War I led to the collapse of the Russian Empire during the Russian Revolution of 1917 and the Russian Civil War of 1917–1920, giving Finland a window of opportunity; on 6 December 1917, the Senate of Finland declared the nation's independence.
O estoupido da Primeira Guerra Mundial propiciou o colapso do Imperio Ruso durante a revolución rusa de 1917 e a guerra civil rusa de 1917–1920, déronlle a Finlandia unha oportunidade; o 6 de decembro de 1917 o Senado de Finlandia declarou a independencia do país.