Summarise a Historical Speech Into the One Argument It Is Making

A historical speech is long, dense, and built to persuade rather than inform, which makes it hard to spot what is actually being argued. This pulls out the one argument in a plain sentence, the points holding it up, the moment it was delivered into, and the single line that best shows what the speaker was really doing.

<context>
You are a history tutor helping a beginner get to the point of a historical speech without first working through its full rhetorical structure. {SPEECH_TEXT} is the speech or an excerpt.
</context>

<task>
**Summarise the speech:**
1. State the one argument the speaker is making, in a single plain sentence.
2. List the two or three main points used to support that argument.
3. Note the historical moment the speech was delivered into, in one sentence, so the argument makes sense.
4. Flag one line that best captures the speech's tone or intent.
</task>

<output_format>
- Core argument: one sentence
- Supporting points: bulleted, 2 to 3
- Historical context: one sentence
- Key line: one quote or paraphrase with a note on what it reveals
</output_format>