Who was the major promoter for the "Rumble in the Jungle" in 1974?

King entered the boxing world after convincing Muhammad Ali to box in a charity exhibition for a local hospital in Cleveland with the help of singer Lloyd Price. In 1974, King negotiated to promote a heavyweight championship fight between Muhammad Ali and George Foreman in Zaire, popularly known as "The Rumble in the Jungle". The fight between Ali and Foreman was a much-anticipated event. King's rivals all sought to promote the bout, but King was able to secure the then-record $10 million purse through an arrangement with the government of Zaire.