How did Andrew Carnegie help with American society?

Andrew Carnegie significantly impacted American society through his role in the steel industry, which helped fuel the nation's industrial growth in the late 19th and early 20th centuries. As a philanthropist, he championed education and libraries, funding the establishment of over 2,500 public libraries across the U.S. His belief in the "Gospel of Wealth" encouraged the wealthy to use their fortunes for the greater good, influencing future generations of philanthropists. Carnegie's contributions helped shape modern infrastructure and promote access to education, leaving a lasting legacy in American society.