The kingdom of Prussia existed from 1701 to 1918.
The Kingdom of Prussia ( Königreich Preußen ) was a German kingdom that constituted the state of Prussia between 1701 and 1918 and included parts of present-day Germany , Poland , Russia , Lithuania , Denmark , Belgium and the Czech Republic . Prussia . In November 1918 , the monarchies were abolished and the nobility lost its political power during the German Revolution of 1918 -- 19 . The Kingdom of Prussia was thus abolished in favour of a republic -- the Free State of Prussia , a state of Germany from 1918 until 1933 .