Where was Prussia located in World War 1?

During World War I, Prussia was primarily located in the northeastern region of Germany. It encompassed areas that are now parts of modern-day Poland, Lithuania, and Russia, including significant cities like Berlin and Königsberg (now Kaliningrad). As a key part of the German Empire, Prussia played a major role in the war efforts and military strategies of the Central Powers. After the war, the Treaty of Versailles and subsequent treaties led to the disintegration of the Prussian state.