Final answer:
Patrick Henry's speech contains the rhetorical device of rhetorical questions, challenging the authority of 'We, the People' and promoting critical thinking.
Step-by-step explanation:
One rhetorical device found in the speech by Patrick Henry is the use of rhetorical questions. In his address at the Virginia Ratifying Convention, he challenges the legitimacy of the phrase 'We, the People' rather than 'We, the States,' questioning the authority and representativeness of the former phrase. This questioning not only engages the audience but also stirs them to consider the implications of a large consolidated government over the states. Henry's use of rhetorical questions exemplifies his strong oratory skills and promotes critical thinking among his listeners, effectively underscoring his position on the subject of American independence and self-governance.