<span>Italy because it was going through the Renaissance. </span>
If you're talking about WW2, it's the battle of Stalingrad.
If it's about WW1, it would probably be Verdun.
Imperialism can be characterized mainly by a country's acquisition and colonization of land. an imperialist country will often take new land by force, and imperialist countries often promote nationalist views.
Alfred Marshall is credited with first using cost benefit analysis