The south American world war wouldn't have happened. Without the boost in confidence that the malvinas war gave the Argentinos they never would have gone after Chile. Additionally without the Brits funneling arms into Chile the war wouldnt have stayed active for as long as it did. The arms embargo would have stayed in place... Not letting either side have the volume of modern weapons that they used. Without the war Pinochet would not have held on to his death, and his image might be radically different. Perhaps he would have been remembered for his human rights abuses rather then being the plucky prophetic leader who allowed Chile to navigate the threat of the fascist Argentinos on one side, the communists in Peru, and the disintegration of Bolivia into civil war.