Why do you want to volunteer abroad? Everybody has their own reasons for choosing to volunteer abroad. Some people want to travel to exotic locations. Others want to learn a new language. Or there are those who simply want to spend their time doing work that benefits people in need.
Some speech topics have been done to death. They are tired and stale, and are not likely to excite you or your audience (think abortion, gun control, smoking, same-sex marriage). Find a topic that grabs you and your audience, something new and fresh, unique and original. A good persuasive speech topic is one that you can use to grab the.