Prussians conquered Polish-speaking Upper Silesia in 1740. Imposed German as sole court language by 1744. Banned non-German-speaking teachers in 1754. Mandated German teaching in all primary schools by 1763. Settled 110,000 German colonists in Silesia over 40 years. Banned Polish in evangelical services in 1810. Subordinated Catholic Church to state and seized its assets. Settled Prussian Protestants on Polish lands. Prohibited Polish workers in Silesian mines. Intensified germanization under Flottwell 1830-1840. Expelled Polish teachers and imposed German in schools 1872-1874. Removed Polish from courts and offices in 1876. Deported 26,000 Poles in Prussian rugi 1885. Enacted settlement laws blocking Polish buildings in 1904. Banned Polish in associations unless 60% Polish speakers in 1908. Changed 24,810 Polish surnames in Gdansk alone by 1944. Polish children struck against German religious instruction in 1901 Września.