sentences:  The Herby – Karsznice connection was completed by 1930, soon afterwards the route reached Inowrocław.As the line between Inowrocław and Bydgoszcz already existed, the next step was the construction of the last part – from Bydgoszcz to Gdynia, through the Polish Corridor, without entering the territory of the Free City of Danzig.The whole Coal Trunk-Line was completed by 1933, and in 1939 it was connected with Częstochowa, due to the Chorzew Siemkowice – Częstochowa route, which was finished on April 23, 1939.