Topic ideas can come from many places: news, class discussions, textbooks, websites, etc.
Choose a topic that interests you.
Make sure the topic you choose meets your instructor's requirements.
A good topic starts as a research question. Research will give you the information you need to answer that question.
What is a Research Question?
What are you trying to find out? Your research question reflects the main idea of your paper or assignment. It will guide every step of your research. The research you conduct is your attempt to answer this question.