Why did the soviets have the advantage at the battle of stalingrad

He u.s. constitution (1787) establishes a national legislature with powers to “create national law”, a national executive with the power to “enforce national law”, and a national judiciary branch with the power to “interpret national and state policies” to see whether or not they violate the national constitution. this term describes the division of governmental authority into semi-independent bodies?

What role and side did italy fight on during world war 1? why did they change sides? write this in your own words.

What do u think caused the size of the roman empire to change