Final answer:
An effective wartime speech must have powerful language, a positive theme, and selective half-truths.
Step-by-step explanation:
An effective wartime speech should have powerful language, a positive theme, and selective half-truths. Powerful language helps to captivate the audience and convey the speaker's message effectively. A positive theme fosters unity and motivates the listeners during times of war. Selective half-truths refer to intentionally omitting certain details or misleading information to shape public opinion in favor of the speaker's agenda.
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