John D. Rockefeller

John D. Rockefeller was an American industrialist and philanthropist, best known as the founder of Standard Oil Company in the late 19th century. He revolutionized the petroleum industry, leading to the establishment of oil as a vital energy source. Through aggressive business practices, Rockefeller gained substantial control over the oil market, making him one of the wealthiest individuals in history. After facing legal challenges concerning monopolistic practices, he diversified his wealth into philanthropy, funding various educational, medical, and scientific initiatives, significantly impacting American society and global health. His legacy includes both his economic influence and charitable endeavors.