Andrew Carnegie was a Scottish-American industrialist and philanthropist, renowned for leading the expansion of the American steel industry in the late 19th century. Born on November 25, 1835, in Dunfermline, Scotland, he immigrated to the United States with his family at a young age. Carnegie worked his way up from humble beginnings, starting in a cotton factory before investing in railroads and eventually establishing his steel company. His innovations and leadership in the steel industry made him one of the wealthiest individuals in American history. Carnegie believed in the responsibility of the wealthy to use their resources for the betterment of society, and he became a prominent philanthropist, funding numerous educational, cultural, and public institutions, including Carnegie Mellon University. He was also deeply involved in the development of libraries and charitable foundations. Carnegie passed away on August 11, 1919, in Lenox, Massachusetts, at the age of 83. He was the son of William Carnegie and Margaret Morrison Carnegie, and had a sibling, Thomas M. Carnegie. His daughter, Margaret Carnegie Miller, survived him.