Well for starters you need to decide where you stand on the subject in order to make a thesis statement at all. You could start with opposing the corruption in Nigeria,
Do a little research on what types of corruption is going on, statistics of how many have died due to the corruption and finally finding some sort of answer to how to stop the corruption.
After you take a stand on the topic you can google thesis builder and put in the important information there, that should get you started. See link below to one I have used a few times.
· 1 decade ago