Mythology
In the old days, before any books, there are people so bored that they starts to making shit up, claim the existence of supernatural deities watching over them. Whether or not these deities are real or not, they became legend or myth, and as these legends passed down from person to person as either stories or religion, it gave birth to the fantasy genre we all knew and love. Of course, myth differs from countries to countries.
Connection with Fantasy Genre
As you can see, many author took interest at the old legend and decided to include its elements in their own stories. Notably Tolken took many elements from the Norse and Germanic Mythology and popularize the concept of fantasy race like Dwarfs and Elves.
Popular Mythology authors likes to stole from inspired by
Norse Mythology - Basically there was these frost giants and they were sweats born from the armpit of Ymir, the first of giants. The said giant was born from ice and so was a giant cow. Then that giant cow accidentally created a god by just licking a salty rock and gave birth to the first god name Burri, who then fucked his waifu Bestla and gave birth to Odin and his brothers. Odin does like giants so he and his brother killed Ymir and thus also killed/drowned other giants with its flood of blood. Odin then use Ymir's body to forge a new world.......Then Ragnork came.
Greek Mythology - A titans name Gaia is lonely so she gave birth to another titans and fucked him for babies. Cronus the last born giants fear that he might be killed by his son one day so he ate each one of them as a new one is born from his wife Rhea, but Rhea hide Zeus and fooled Cronus with a rock to his belly. Zeus then grown up and killed his father, saving all his brother inside his father's belly and start a war that will exterminate all titans.
Popular mythology elements used in Fantasy
- Dwarfs
- Elves
- Vampire
- Necromancy
- Trolls
- Giants
- Minotaur
- Gods/Deities
- Genies
- Dragon
- Orc