World war 2 had an enormous impact on the culture and society of the united states.
what does this mean?

This means that WW2 caused many things to be the way they are today, such as the racisim, the invisible line of subtle seperation between races and religions, etc. 

Two of the most major outcomes resulting from the Crusades were that the King's authority increased vastly and the Europeans learned new and more things from the Muslims that they had encountered and come across. Many of the peasants and farmers left their land to go fight in the wars, and wen they died, their land was handed over to the king.