Help with Research Paper Topic (Mythology and its relation to history)?

I have to have a narrowed down topic under Mythology and its relation to history. However, I'm entirely unsure what to do. I think maybe something like Greek History's Influence on the Iliad, or Countries' History's effects on Its Mythologies would be practical, but I'm not sure if they are narrow enough for a research paper. Any help with a narrowed topic or what to write about with be extremely helpful!