Question: Anerican shorthair cats are from what decent?

<P0-S0> 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. <P0-S1>  According to the Cat Fancier's Association, in 2012, it was the seventh most popular breed of cat in the United States. <SEP> <P1-S0> The Snowshoe is a rare breed of cat originating in the United States of America in the 1960s. <P1-S1>  Snowshoes were first produced in Philadelphia when a Siamese breeder's cat gave birth to three kittens with white feet. <P1-S2>  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. <P1-S3>  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. <P1-S4>  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. <SEP> <P2-S0> Colorpoint Shorthairs are a variety of domestic cat. <P2-S1>  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. <P2-S2>  These cats are distinguished by their conformance to wide range of sixteen different point colors, beyond the four standard Siamese colors. <P2-S3>  The variety was initially created by crossbreeding Siamese with the American Shorthair – the same mixture that created the Oriental Shorthair, but with different goals. <P2-S4>  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. <P2-S5>  In body style, head shape, and other features, it may be intermediate between the two foundation breeds, which show cats leaning toward Siamese traits. <P2-S6>  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. <SEP> <P3-S0> 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. <P3-S1>  In British English, they are often referred to as moggies. <P3-S2>  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. <P3-S3>  Domestic short-haireds are the most common cat in the United States, accounting for around 90–95% of their number. <P3-S4>  Other generic terms include house cat and alley cat (the latter may be used more specifically to refer to feral specimens). <P3-S5>  The term tabby cat technically refers to a coat pattern, but is also often used as a general term for cats of this sort.