Original: Volgograd , formerly called Tsaritsyn ( ; 1589 â '' 1925 ) and Stalingrad ( ; 1925 â '' 1961 ) is an important industrial city and the administrative center of Volgograd Oblast , Russia .
Simplified: Volgograd formerly called Tsaritsyn ( 1589 â '' 1925 ) and Stalingrad ( 1925 â '' 1961 ) is an important industrial city and the administrative center of Volgograd Oblast , Russia .