Andrew Carnegie (1835–1919) was a Scottish-American industrialist, business magnate, and philanthropist who led the expansion of the American steel industry in the late 19th century. Born in Dunfermline, Scotland, Carnegie emigrated to the United States as a child and rose from humble beginnings to become one of the wealthiest men in history. He is best known for his steel empire and his philosophy of philanthropy, which led to the establishment of libraries, universities, and cultural institutions around the world. His major works include _The Gospel of Wealth_, where he outlines his belief in the moral responsibility of the wealthy to use their fortunes for the benefit of society. Carnegie’s legacy continues to shape global perspectives on wealth, industry, and social responsibility.