This is the meaning according to the web: Storytelling is the conveying of events in words,images, and sounds often by improvisation or embellishment. Stories or narratives have been shared in every culture as a means of entertainment, education, cultural preservation, and in order to instill moral values. Crucial elements of stories and storytelling include plot, characters, and narrative point of view. LINK
I think storytelling is a part of culture because it gives a good sample of the identity or values of each country. Our legends teach in fun, and there are situations that can leave us positive or negative things according to our behavior. For example "la Cegua"; this legend talks about alcoholic abuse that has a negative result in the person.
All storytelling in the end leaves a teaching over all for the kids who hear it. The storytelling is part of growing of each country and the storytellers are wonderful people because not all people can make of a simple story a great listening experience as make Jacky Torrence for example. Her voice is very sweet or mysterious if it is necessary and this makes that we enter in the story according the narration. The art of storytelling is wonderful!!!