It is completely up to you and your personal preference, I like doing speeches on school related problems, like here in England we have school uniforms, so often I'd do persuasive speeches on "Why we should get rid of school uniforms?". The question you have asked really doesn't have an answer, it's completely entirely up to you and because we have so many topics on the world, it is almost certain for one to choose one they feel they will enjoy and will have enough ideas to write about. You can always choose something challenging for your own good and then if you get stuck, you're on Brainly! Thousands of users here can help you! ;3
