What was Robert S. Kerr's primary profession before entering politics?

Robert S. Kerr's primary profession before entering politics was as an oil businessman. He became prominent in the oil industry in Oklahoma during the early 20th century, establishing a successful career in the oil business that significantly contributed to his wealth and influence. This background in the oil sector played a pivotal role in his political life, as he utilized his resources and connections gained from this profession to support his political career. Kerr eventually became a U.S. Senator, and his business experiences helped shape his perspectives on economic and energy policies. His success in the oil industry was a crucial foundation for his later endeavors in public service.