"Three Billy Goats Gruff" (Norwegian: De tre bukkene Bruse ) is a Norwegian fairy tale.
 The fairy tale was collected by Peter Christen Asbjørnsen and Jørgen Moe in their "Norske Folkeeventyr", first published between 1841 and 1844.
 It has an "eat-me-when-I'm-fatter" plot (Aarne-Thompson type 122E).
The Troll's Daughter is a Danish fairy tale.
 Andrew Lang included it in "The Pink Fairy Book".
The Boy Who Had an Eating Match with a Troll (Norwegian: "Askeladden som kappåt med trollet" ) is a Norwegian fairy tale collected by Asbjørnsen and Moe.
 The troll is, as commonly depicted, not very intelligent and has poor vision, while the boy is clever, outwitting the troll to win an eating contest.
Among Gnomes and Trolls (Swedish: "Bland tomtar och troll" ), is a popular Swedish folklore and fairy tales annual and children's fairy tale anthology published since 1907.
 One of the most noted of the early illustrators is artist John Bauer.
The Troll by Julia Donaldson and David Roberts is a children's story about a troll and some pirates.
 The troll in this story is based on the troll from the "Three Billy Goats Gruff" fairy tale.
 However, in this story, no goats ever cross the troll's bridge and he is forced to survive on fish that he catches from the river.
 He does encounter, in turn, a spider, a mouse and a rabbit, each of which convinces the troll not to eat them by telling him that he should try a bridge further down the river that is more suitable for capturing goats as he is "sick of fish".
 Meanwhile, the pirate captain Hank Chief and his crew (Peg Polkadot, Ben Buckle and Percy Patch) are searching for the treasure that is marked on their map, but are unable to locate the correct island.
 The pirates also display very poor culinary skills.
 Eventually, the troll reaches the sea and realises that he has been tricked by the other animals; he sees what he thinks are goat tracks in the sand and sets about laying a trap for the goat in a spot not too far from the location on the pirate's treasure map.
 He duly discovers an old chest when digging a large hole to ensnare his prey and throws away the "round shiny objects" he finds therein.
 He decides to lie in wait in the chest for the goat and falls asleep.
 Predictably, the pirates then arrive and make off with their "treasure"; upon opening the chest the pirates decide to make the troll walk the plank, until Peg discovers the troll's frying pan and cookbook.
 On discovering the troll's culinary talents, they agree to spare the troll and make him their cook.
 The troll is delighted and proceeds to tell the pirates that he will make them his favourite goat stew only to be advised, to his horror, that all the pirates desire is .
.
 fish.
The Bøyg (Norwegian: "Bøygen" , pron. ] )
, also referred to as the "Great Bøyg of Etnedal", is a troll in the Scandinavian folklore of Gudbrandsdal and Telemark.
 Characterized as a giant, slimy serpent, it stands as a hindrance to travellers.
 The name means 'bend', 'twist' or 'curve'.
 It appears in the fairy tale of Per Gynt, the basis for Henrik Ibsen's play "Peer Gynt".
The Buried Moon or The Dead Moon is a fairy tale included by Joseph Jacobs in "More English Fairy Tales".
 It is a striking unusual tale, with few variants, and often appearing more mythological than is common for fairy tales.
 It was collected by Mrs. Balfour from the North Lincolnshire Carrs in the Ancholme Valley; its unusual characteristics made many people doubt its origins as a fairy tale.
 However, when Mrs. Balfour published her notes, they were generally found reliable, and the Fens proved to have many other unusual legends.
 The story may be evidence of moon worship.
Undine is a 1916 American silent fantasy drama film which featured actress/athlete Ida Schnall in a water-themed story based upon the fairy tale "Undine" by Friedrich de la Motte Fouque.
 The film was directed by Henry Otto and produced and distributed by the Bluebird Photoplays division of Universal Film Manufacturing Company.
 It is not known whether the film currently survives.
"Rapunzel" ( ; ] ) is a German fairy tale in the collection assembled by the Brothers Grimm, and first published in 1812 as part of "Children's and Household Tales".
 The Grimm Brothers' story is an adaptation of the fairy tale "Rapunzel" by Friedrich Schulz published in 1790.
 The Schulz version is based on "Persinette" by Charlotte-Rose de Caumont de La Force originally published in 1698 which in turn was influenced by an even earlier Italian tale, "Petrosinella" by Giambattista Basile, published in 1634.
 Its plot has been used and parodied in various media and its best known line ("Rapunzel, Rapunzel, let down your hair") is an idiom of popular culture.
 In volume I of the 1812 annotations (Anhang), it is listed as coming from Friedrich Schulz Kleine Romane, Book 5, pp. 269–288, published in Leipzig 1790.
Kashchey the Deathless (Russian: Кащей бессмертный , "Kashchey bessmertnïy"), Kashchey the Immortal, is a one-act opera in three scenes (styled a "little autumnal fairy tale") by Nikolai Rimsky-Korsakov.
 The libretto was written by the composer, and is based on a Russian fairy tale about Koschei the Deathless, an evil, ugly old wizard, who menaced principally young women.
 A similar fairy tale was also used by Igor Stravinsky (Rimsky-Korsakov's pupil) and Michel Fokine to create their iconic ballet, "The Firebird".

Question: The Troll is a children's story based on the troll from the fairy tale of what nationality?
Answer: Norwegian