Why was the battle of stalingrad a significant event in world war ii?

The battle stopped the Germans from advancing further east.

dirty, contaminated water

contaminated food,

chlostrophobic living spaces,

mice infestation,

etc,

the noble might have thought that the system was far because they had lot of things and riches and the serf would have thought that the feudal system was un fair because of the way they were treated.