[Extra credit] What is the function of the war?

Usually , war occurs in order to maintain the hegemony or when , the struggle for supremacy or blank , the force of when you go to trade protectionism of nationalism trade
The Korea and Vietnam , tug of war with the Soviet Union , the world 1, 2 World War I , Iraq occur isolationist policy that rejected the hegemony and the protectionist policies of the United States you have many of the resources and the challenge to the United Kingdom , Germany , Libya took place in connection with the oil hegemony

The effect of conventional war , regardless of the winner and loser in the war party , a great deal of loss just leave
America became a hegemon in World War I , but it is a winner
Younpu is also Korean War only huge debt just to have embraced
I only went out only the people of industrial facilities in North and South is dead , only Japan was just the rich and powerful , Vietnam was the winner of the United States was a loser Vietnam , in Iraq war Gyorugun enormous the winner Vietnam and gold was the only left by the destruction of production facilities side effects of agent Orange , but America 's Hyakugaiatteichirinashi the Gulf War in the party , South Korea Vietnam war Department was stronger by it not you have created a huge profit war , war in Iraq , in fact , is Natodo~uto British retreated to seat loser 1 and 2 world War has seen the United States is facing a crisis because of this war , also the United States
The thing you are unable to maintain hegemony by war in the end.