Question: Anerican shorthair cats are from what decent?

full_context: Document 1: Kashmir cat: The Kashmir type of cat is not recognized as its own breed by many cat fancier and breeder organizations, being usually more of a label of a coat type: semi-long-haired to long-haired, and grey or brown. The variety is essentially a solid-colored Himalayan, and has been the subject of much disagreement. They were originally born in litters of Himalayans and have been bred to each other to create pure coats with rich lilac to chocolate colors.
Document 2: American Ringtail: The American Ringtail Cat is a new experimental cat breed that started with a California cat named Solomon in 1998. Owner Susan Manley started a breeding program to reproduce his unique curled tail, which she had also noted in other feral cats in northern California. This genetic mutation seems to have no ill health effects associated with it. The cats with curled tails were bred with Ragdoll cats and American Shorthair cats. In 2005 The International Cat Association, gave this new breed “Registration Only” status.
Document 3: Snowshoe cat: The Snowshoe is a rare breed of cat originating in the United States of America in the 1960s. Snowshoes were first produced in Philadelphia when a Siamese breeder's cat gave birth to three kittens with white feet. The breeder, Dorothy Hinds-Daugherty, then began a breeding program to produce what were originally called "Silver Laces", crossing the strangely marked Siamese cats with bi-color American Shorthair cats and other breeds. When Hinds-Daugherty left the program, Vikki Olander began working with the cats and recruited new breeders, as well as worked towards full recognition within cat associations. Despite having existed for 45 years, Snowshoes are rare due to the difficulty of reproducing the correct coat markings. The marks are based on recessive genes for color points and on the co-dominant but variably-expressed piebald pattern gene, making it difficult to predict the appearance of offspring.
Document 4: Colorpoint Shorthair: Colorpoint Shorthairs are a variety of domestic cat. Depending on the cat registry, they may be considered a separate breed of cat, or more often a variant of a pre-existing one, if accepted at all. These cats are distinguished by their conformance to wide range of sixteen different point colors, beyond the four standard Siamese colors. The variety was initially created by crossbreeding Siamese with the American Shorthair – the same mixture that created the Oriental Shorthair, but with different goals. The Colorpoint Shorthair shares the point-coloration pattern with the Siamese, but in the nontraditional colors of red, cream, tortoiseshell, and lynx (tabby) points, and minor variations thereof. In body style, head shape, and other features, it may be intermediate between the two foundation breeds, which show cats leaning toward Siamese traits. Those who favour the Traditional Siamese look may also favour the more moderate-typed Colourpoint Shorthairs that take after their American Shorthair ancestors in shape.
Document 5: Persian cat: The Persian cat (Persian: گربه ایرانی "Gorbe Irâni") is a long-haired breed of cat characterized by its round face and short muzzle. It is also known as the "Persian Longhair". In the Middle East they are widely known as "Iranian" and in Iran they are known as "Shirazi". The first documented ancestors of the Persian were imported into Italy from Iran (Persia) around 1620. The exact history of the Persian cat does seem to be a bit of a mystery but many of these long-haired cats were seen in hieroglyphics. The story has it that these long-haired cats were then imported into Europe as their popularity grew and breeding took place in Italy and France.
Document 6: Asian Semi-longhair: The Asian Semi-Longhair is a cat breed similar to the Asian Shorthair except it has semi-long fur. The breed is also known by the name Tiffanie or Tiffany. It is recognized in any of the Asian Shorthair or Burmese colors and patterns. Like the Asian Shorthair, the breed was developed in Britain and is not currently recognized by any U.S. Registries. It has full recognition in the GCCF. It is related to, and in some registries distinct from, the Chantilly-Tiffany or Foreign Longhair, the North American variant.
Document 7: Ocicat: The Ocicat is an all-domestic breed of cat which resembles a wild cat but has no wild DNA in its gene pool. The breed is unusual in that it is spotted like a wild cat but has the temperament of a domestic animal. It is named for its resemblance to the Ocelot. The breed was established from Siamese and Abyssinian stock; later, American Shorthairs (silver tabbies) were added to the mix and gave the breed their silver color, bone structure and distinct markings.
Document 8: European Shorthair: The European Shorthair, also called the European or in WCF Celtic Shorthair, is a breed originating in Europe. The term has also been used as an elaborate way of referring to common domestic cats of Europe, causing some confusion as the pedigree cats of this breed also should resemble the typical domestic cats of Europe. This role was held until the beginning of the 20th century by the British Shorthair, even though stockier than the majority of common European cats, until 1949 when the European Shorthair was recognized by the Fédération internationale féline (FIFe). The oldest known European Shorthair registered in FIFe was born in 1940, as the origin of the European Shorthair predates the formation of FIFe in 1949. Breed standards describing the European Shorthair as an established breed can be found in different cat books from the 1930ies.
Document 9: American Shorthair: The American Shorthair (ASH) is a breed of domestic cat believed to be descended from European cats brought to North America by early settlers to protect valuable cargo from mice and rats. According to the Cat Fancier's Association, in 2012, it was the seventh most popular breed of cat in the United States.
Document 10: Highlander cat: The Highlander (also known as the Highlander Shorthair, and originally as the Highland Lynx), is an experimental breed of cat. The unique appearance of the Highlander comes from the deliberate cross between the Desert Lynx and the Jungle Curl breeds, also recently developed. The latter of these has some non-domestic ancestry from two Asian small cat species, the leopard cat and jungle cat, making the Highlander nominally a feline hybrid, though its foundation stock is mostly domestic cat.
Document 11: Lists of cats: The cat ("Felis silvestris catus"), also known as the domestic cat or house cat to distinguish it from other felines, is a small carnivorous species of crepuscular mammal that is often valued by humans for its companionship and its ability to hunt vermin.
Document 12: Domestic short-haired cat: A domestic short-haired cat is a cat of mixed ancestry – thus not belonging to any particular recognized cat breed – possessing a coat of short fur. In British English, they are often referred to as moggies. Domestic short-haired cats should not be confused with the British Shorthair, American Shorthair or other standardized breeds with "Shorthair" names, which are breeds recognized by various registries. Domestic short-haireds are the most common cat in the United States, accounting for around 90–95% of their number. Other generic terms include house cat and alley cat (the latter may be used more specifically to refer to feral specimens). The term tabby cat technically refers to a coat pattern, but is also often used as a general term for cats of this sort.
Document 13: Himalayan cat: The Himalayan (a.k.a. Himalayan Persian, or Colourpoint Persian as it is commonly referred to in Europe), is a breed or sub-breed of long-haired cat identical in type to the Persian, with the exception of its blue eyes and its point colouration, which were derived from crossing the Persian with the Siamese.
Document 14: Norwegian Forest cat: The Norwegian Forest cat (Norwegian: Norsk skogkatt or Norsk skaukatt ) is a breed of domestic cat originating in Northern Europe. This natural breed is adapted to a very cold climate, with top coat of glossy, long, water-shedding hairs and a woolly undercoat for insulation. Although this is uncertain, the breed's ancestors may have been a landrace of short-haired cats brought to Norway by the Vikings around 1000 AD, who may also have brought with them long-haired cats, like those ancestral to the modern Siberian and Turkish Angora breeds. During World War II, the breed became nearly extinct until efforts by the Norwegian Forest Cat Club helped the breed by creating an official breeding program. It was registered as a breed with the European Fédération Internationale Féline in the 1970s, when a local cat fancier, Carl-Fredrik Nordane, took notice of the breed and made efforts to register it. Currently, the Norwegian Forest breed is very popular in Norway, Sweden, Iceland and France.
Document 15: American Bobtail: The American Bobtail is an uncommon breed of domestic cat which was developed in the late 1960s. It is most notable for its stubby "bobbed" tail about one-third to one-half the length of a normal cat's tail. This is the result of a cat body type genetic mutation affecting the tail development, similar to that of a Manx cat. The breed is not related to the Japanese Bobtail despite the similar name and physical type—the breeding programs are entirely unrelated, and the genetic mutation causing the bobbed tail are known to be different because the mutation causing the American Bobtail's tail is dominant, whereas the Japanese Bobtail tail mutation is recessive.
ground_truth: descended from European