John D. Rockefeller Jr.

John D. Rockefeller Jr. (1874-1960) was an American philanthropist and the only son of oil magnate John D. Rockefeller Sr. While his father founded the Standard Oil Company and became one of the richest men in history, John Jr. focused on philanthropy and social causes. He supported education, public health, and the arts, significantly contributing to institutions like the Rockefeller Foundation and the establishment of Yosemite National Park. His work helped shape modern philanthropy, emphasizing social responsibility and community development, and he played a key role in the conservation movement in the United States.