Evaluate Each Potential Topic
If you can think of at least a few topics that would be appropriate, you must simply consider each one individually. Think about how you feel about that topic. If you must educate, be sure it is a subject about which you are particularly well-informed. If you must persuade, be sure it is a subject about which you are at least moderately passionate. Of course, the most important factor in choosing a topic is the number of ideas you have about that topic.
Even if none of the subjects you thought of seem particularly appealing, try just choosing one to work with. It may turn out to be a better topic than you at first thought.
Before you are ready to move on in the essay-writing process, look one more time at the topic you have selected. Think about the type of paper you are expected to produce. Should it be a general overview, or a specific analysis of the topic? If it should be an overview, then you are probably ready to move to the next step. If it should be a specific analysis, make sure your topic is fairly specific. If it is too general, you must choose a narrower subtopic to discuss.
For example, the topic "KENYA" is a general one. If your objective is to write an overview, this topic is suitable. If your objective is to write a specific analysis, this topic is too general. You must narrow it to something like "Politics in Kenya" or "Kenya's Culture.