Final answer:
The jotnar in Norse mythology are giants, not goblins, trolls, or elves. The eyebrows of the giant Aurgelmir became the fence around Midgard. The mythology of the Norse is connected to historical artifacts like the Jelling Stones, which reflect the transition from paganism to Christianity in Scandinavia.
Step-by-step explanation:
In Norse mythology, the jotnar are considered to be giants. The jotnar were seen as the progenitors of many gods and creatures in the Norse pantheon. Aurgelmir, also known as Ymir, is a primeval being and father of the race of giants. According to the myth, Aurgelmir's eyebrows were transformed into the fence that encloses Midgard, the world of humans. This mythology forms part of the larger Norse cosmology that features in various sagas and texts from Scandinavian history.
The history and legacy of the Norse people, including their myths and the jotnar, can be seen through archaeological finds such as the Jelling Stones in Denmark. These stones were raised by the Norse Kings Gorm and Harald to commemorate their deceased, celebrate conquests, and signify a shift from Norse paganism to Christianity, as evidenced by inscriptions and Christian iconography on the stones.