 Complete the following phrase:  Częstochowa entered the 20th century as one of the leading industrial centres of Russian Poland together with Warsaw, Łódź, and Zagłębie Dąbrowskie. The city was conveniently located on the Warta and other smaller rivers Kucelinka, Stradomka, Konopka. Real estate and land prices were low, compared to Łódź. The monastery attracted numerous pilgrims, who also were customers of local businesses. In 1904, Częstochowa had 678 smaller workshops, which employed 2,000 workers. In 1902, rail connection to the Prussian border crossing at Herby Stare was opened, and in 1911, the line to Kielce was completed. The 