Famed Scottish-American industrialist and philanthropist Andrew Carnegie amassed a huge fortune in iron and steel during the American Industrial Revolution, eventually selling his firm to J.P. Morgan’s U.S. Steel Corporation for several hundred million dollars. However, Carnegie was not content to keep his riches to himself. Guided by the belief that the rich are “trustees” of their wealth and must administer it for the good of the public, he donated how much of his fortune during his lifetime? Discuss