"President Johnson's escalation of the Vietnam War after the Tonkin Gulf Incident" is the historical event most useful to include in a speech regarding power in the executive branch.
We are still obligated to do our best out of respect for the audience and their needs. Fortunately, there are some tools that can be helpful to you even the very first time you present a speech.
Finally, resist the habit of pitching your voice “up” at the ends of sentences. It makes them sound like questions instead of statements. This habit can be disorienting and distracting, interfering with the audience’s ability to focus entirely on the message.
Learn more about speech here-https://brainly.com/question/397238
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