Web Accessibility History Timeline

Digital Accessibility is the practice of ensuring everyone can access web and digital content. It is merely ensuring our website and applications are accessible to everyone and can be operated by people with whether situational, temporary, or permanent impairment such as deaf, blind, broken arm, etc.
Digital Accessibility and non-discrimination laws have transformed over the years, varying from one country to another, but one thing remains, the World Wide Web Consortium (W3C-WAI’s) WCAG. Many countries have hence adopted the Web Content Accessibility Guidelines (WCAG) in their accessibility laws. They are now required by laws and policies in these countries, including the U.S.A, U.K, Canada, EU member states, Israel, and China.
The USA, for example, has the Americans with Disability Act (ADA) and Section 508 of the Rehabilitation Act that ensure that all people (including those with impairments) have equal access to goods, services, and ICT.

Infographic Source: https://www.whoisaccessible.com/guidelines/how-w3c-and-wai-standards-help-create-accessible-designs/