sentences:  The city grew from 12,900 in 1852 to 57,700 in 1910 – of whom 84 percent were German settlers and 16 percent indigenous Poles, all holding German citizenships.During World War I, Poles in Bydgoszcz formed secret organizations, preparing to regain control of the city in the event of Poland regaining independence.After the war, despite the town's German majority, Bromberg was assigned to the recreated Polish state by the 1919 Versailles Treaty.