A “Little” strike in this industry led to the 1937 Memorial Day Massacre in Chicago. The Supreme Court blocked the Truman administration’s attempt to seize properties (10[1])in this industry in the Youngstown case. Alexander Berkman was arrested for attempting to stab an executive in this industry, Henry Clay Frick. A businessman in this industry who funded the American Anti-Imperialist League described the duties of philanthropy in “The Gospel (-5[1])of Wealth.” (10[1])Pinkerton (-5[1])agents engaged in a shootout with striking workers (10[1])in this industry (-5[1])in Homestead, Pennsylvania. (-5[1])For 10 points, Pittsburgh was a center for what industry in which (10[1])Andrew Carnegie became a billionaire? (10[2])■END■ (10[2]0[2])