Jackson had been a rodeo fan since childhood. In his informative speech, he gave a presentation with the following main points. Jackson's points were arranged in ____________ order. I. Rodeos began in the Old West as contests of skill among cowboys during cattle roundups. II. By 1920 rodeos had become a popular spectator sport for the general public. III. Today rodeos combine traditional western events with a circuslike atmosphere and the marketing techniques of big business.