Question

what is mongolian idiocy.
who discovered it.​

Answer 1

Explanation:

MONGOLIAN IDiOCY (MONGOLISM) AND MATERNAL AGE. By L. S. Penrose. The condition known as “mongolism,” first described by Langdon Down“ is an abnormality of human growth which presents one of the most baffling problems in medicine.

Answer 2

Answer:

The obsolete medical terms Mongolian idiocy, Mongolism, and Mongoloid referred to a specific type of mental deficiency, associated with the genetic disorder now known as Down syndrome. The obsolete term for a person with this syndrome was Mongolian idiot.

In the 21st century, these terms are no longer used as medical terminology, deemed an unacceptable, offensive and misleading description of those with Down's syndrome.[1] The terminology change was brought about both by scientific and medical experts,[2] as well as people of Asian ancestry,[2] including those from Mongolia.[3]

The stand-alone term "idiot" itself has a similar history of meaning and connotation change.[4]