What are three pieces of evidence Publius presents to support his claim?

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It is only possible to know the evidence of a text, after reading it. However, we can consider that evidences are statements that support the arguments developed by the author of the text. These evidences prove or justify giving veracity to what the author said, showing facts, statistical data, examples, among others. In this way, you must look for this type of information, in order to be able to answer your question.

the answer is not negative reinforcement.