7) Quetzalcoatl and Corn
Before the arrival of Quetzalcoatl (feathered serpent-god of intelligence and self-reflection), the Aztecs only ate roots because the corn was hidden behind the mountains.
So the Aztecs sent priests to Quetzalcoatl (also overseer of priests) and asked him for corns to which Quetzalcoatl agreed to.
All the other gods beside Quetzalcoatl already tried to cross the mountain but none of them had enough wit and courage to succeed. Quetzalcoatl decided that he will turn himself into an insect to cross the mountains and he brought back a single grain of corn to the Aztecs.
The Aztecs planted the seed of that corn, and eventually the crop worked out more and millions more corn came and eventually became a staple crop for the Aztecs.
Miriam told me this story after I asked her to tell me a story. I also knew this story from before, because we were taught this back in 7th grade, and I guess Miriam, having gone to the same school as me, learnt the story there too. She had vague memories of certain parts so the performance was not perfect and had many doubting moments, but the big story was definitely comprehensible.