A good topic for an argumentative essay has several characteristics:
Encyclopedias are an excellent place to start your research because they can provide a broad overview of your chosen topic, and will familiarize you with the major concepts and terms associated with it. A specialized encyclopedia is also a good resource to browse when you are having trouble deciding upon a topic. In addition, an encyclopedia article will often conclude with a short bibliography, which can lead you to additional resources on your topic.
Try this quick interactive tutorial on choosing your topic
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