How was Andrew Carnegie a turning point in history?

Andrew Carnegie was a pivotal figure in American industrial history, revolutionizing the steel industry and promoting the concept of vertical integration. His innovations in production and business practices helped transform the U.S. into a leading industrial power in the late 19th century. Additionally, Carnegie's philanthropic efforts, particularly in education and libraries, set a precedent for wealthy individuals to contribute to societal improvement, influencing future generations of philanthropists. His legacy underscores the impact of industrialization on economic growth and social change.