James Barry Munnik Hertzog was a prominent South African political figure who served as the Prime Minister of South Africa from 1924 to 1939. He was a key figure in the country's politics during the early 20th century and played a significant role in shaping South Africa's political landscape. Hertzog was known for his advocacy of Afrikaner nationalism and his efforts to promote the interests of the Afrikaner people. He also played a role in shaping South Africa's policies on race and segregation during his time in office.