The Western mythological system includes many different mythological stories. 1. Greek Mythology: Composed of Zeus, Hera, Poseidon, and many other major gods and heroes. It described the origin and development of ancient Greek civilization, including many myths and legends. 2. Norse mythology: composed of Thor, Odin, Zeus, and the gods. It talked about the origin and development of the civilizations and gods in the Northern Europe region, including many myths and legends. 3. American Mythology: Including the fusion of Native American culture and European Christian culture, it tells the origin and development of the United States, including many myths and legends. These mythical stories had their own unique characteristics and legends that were widely passed down and interpreted as important sources of literature, movies, and other art forms.