What was john Rockefeller philanthropic activities?

John D. Rockefeller was a prominent philanthropist who founded the Rockefeller Foundation in 1913. He donated vast sums of money to various causes, particularly in the fields of education, public health, and scientific research. Some of his notable contributions include funding the University of Chicago and the Rockefeller University, as well as supporting medical research that led to the development of the first yellow fever vaccine.