Final answer:
Margaret Thatcher used firm and nationalistic rhetoric to defend the sovereignty of the Falkland Islands during the Falklands War, emphasizing British resolve and the protection of its citizens.
Step-by-step explanation:
Margaret Thatcher's rhetoric around the Falklands War was decisively firm and nationalistic, as it was geared towards defending the sovereignty of the Falkland Islands against Argentina's invasion in 1982. Framing the conflict as a clear case of aggression against British territory, Thatcher utilized powerful language to rally the support of the British public and international community. Her speeches during this period emphasized Britain's resolve to protect its citizens and uphold international law, showcasing her belief in a strong, global Britain.