What make these stories a myth?

Answer 1

that someone told it, wrote it, knew it at one point, or it could be known.

Answer 2

Myths are traditional stories that often involve gods, supernatural beings, or heroes, and are used to explain natural phenomena, customs, or beliefs within a culture. They typically serve to teach moral lessons, provide explanations for the world and human behavior, and reinforce cultural values. Myths are often passed down through generations orally before being recorded in written form.