I have to write a persuasive speech but I literally can't think of anything anyone have ideas I could build off of?

Make sure that it's a topic that is relevant and people care about. It should be something you're genuinely interested in and hasn't been overdone.

Education

Ethics

Government/Politics

Religion

Sports

Technology

Science

Health

Economics

The Arts

A few tips:

- do your research

- consider all angles

- know your audience

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cassius, casca, and their allies plant false documents to manipulate brutus to join their cause to remove caesar. after doing so, they visit brutus at night in his home to persuade him of their views. there they plan caesar's death. brutus is troubled but refuses to confide in his devoted wife, portia. on 15 march, caesar's wife, calpurnia, urges him not to go to the senate. she has had visionary dreams and fears the portents of the overnight storms.