There are three ways for you to get a topic to research:

1. Your teacher assigns one to you.

In this case, you don't have to worry about selecting a topic; just start listing key words.

2. Your teacher gives you some guidelines for choosing one.

Here's where you have to do some reading on the general topic and get an overview. After doing that, you will be ready to focus your topic into a reasonable size that you can handle for this project.

3. Your teacher gives you complete freedom to choose whatever topic you want.

This can be a challenge, but also a lot of fun! Pick something that interests you and learn more about it.

In any case, pick a topic that interests you in some way. Otherwise it will be boring and torture to get through.