Andrew Carnegie rapidly learned the basic business arts and followed paths open to him as he ultimately dominated the steel industry in the United States. He was a master of optimism, communication, and delegation with a very short leash. He built his business on the backs of his employees under the theory that he needed the maximum amount of money so he could give it away for public good. This meant he sacrificed any reasonable comfort for his workers so that he always had the most cash flowing into his account. When he sold his business, he became in a stroke of a pen the richest man in the world at that time. Carnegie immediately began giving away what is now the equivalent of billions of dollars in civic gifts across America and Europe. Since his money compounded so quickly, he was never able to achieve his goal of giving everything away prior to his death. In a personal interest almost identical to that of Joesph Kennedy, Andrew Carnegie championed world peace using his considerable financial power and influence in an attempt to establish a united nations type of approach to world peace. He failed as World War I began. Carnegie was devastated that he was not able to get his way as he had in every other aspect of his life.