 Some railway network expansion took place in Donbas area as well.In 1873 from Znamianka in Central Ukraine located on the Poltava-Balta road another branch was stretched south towards the port of Mykolaiv at Black Sea making it the second seaport in Ukraine connected to network of railways.About that time a system of railroads expanded further towards the Drohobych-Boryslav oil fields and bigger Sambor areas in Ukrainian Carpathians and another rail branch was extended along Tisza River in Hungary.