Final answer:
Audience reactions to the speech's content on big business, religion, and farmers can be deduced through understanding the Progressive Era's context, rhetorical strategies similar to Urban's crusade call, and the Populist Party's endorsement, respectively.
Step-by-step explanation:
Without knowing the specific content of the speech in question, we can speculate on audience reactions to big business, religion, and farmers using historical context and common rhetorical strategies. For big business, if the speech reflected Progressive Era sentiments, the audience might have felt cautious optimism, as business leaders appreciated mild government regulation over radical change but feared that reforms could eventually challenge their power. Regarding religion, if the speech employed strategies similar to Urban's call for a crusade, which emphasized a moral and spiritual duty, the audience might have felt a sense of righteous purpose or divine mission. As for farmers, considering the populist support the speaker garnered, the content might have resonated with farmers' struggles and aspirations for fairer treatment and economic support, leading to their enthusiastic reaction.