 The city was first connected to the Glogau-Grünberg-Guben railway line in 1871, followed by connections to Christianstadt in 1904, Wollstein in 1905, and a local line to Sprottau in 1911.In 1919, Grünberg became part of the Province of Lower Silesia within Weimar Germany.On 1 April 1922 it became a district-free city, but this status was revoked on 1 October 1933 while part of Nazi Germany.