Short answers, pulled from the story.
A 15-year-old boy with spina bifida lived and died in a hunter-gatherer community at the Windover Archaeological Site, proving that his group cared for him. This reality contradicts the popular belief that ancient societies simply abandoned or killed disabled infants.
King Agesilaus of Sparta fought major battles despite being lame in one leg during the period when Ancient Greeks built stone ramps at the Sanctuary of Asclepius at Epidaurus by 370 B.C.E. to allow mobility-impaired visitors access to healing structures.
The United Nations Convention on the Rights of Persons with Disabilities was formally agreed upon the 13th of December 2006. One hundred ninety-three nations have ratified or accepted accession to this agreement since its inception to protect the rights of an estimated 650 million disabled people worldwide.
Mike Oliver coined the phrase social model of disability in 1983 to distinguish between fixing a person versus fixing society. The social model argues that barriers created by inaccessible buildings and discriminatory attitudes are the true problem rather than individual impairments.
Nazi Germany killed approximately 250,000 disabled people during the Holocaust under these eugenics policies targeting those deemed unfit for deportation, sterilization, or institutionalization.