Answer:
Stiff Soviet resistance. The German onslaught in the summer of 1942 on Stalingrad was almost impossible to stop. ...
Mass heroism. The strong Soviet resistance would not have been possible without the mass heroism of Stalingrad's defenders. ...
German mistakes.
Step-by-step explanation:
Hope it helps army ;). Sarangae! borohae! ♡♡♡♡