Final answer:
The Americans with Disabilities Act (ADA) was principally aimed at prohibiting employment discrimination against individuals with disabilities and required employers to provide reasonable accommodations for them.
Step-by-step explanation:
The primary purpose of the Americans with Disabilities Act (ADA) signed into law by President George H.W. Bush was to prohibit employment discrimination on the basis of disability. The ADA represents a significant milestone in civil rights, ensuring that individuals with disabilities have equal opportunities and access to employment, as well as public accommodations and government services. It mandated that employers with fifteen or more employees provide reasonable accommodations, thus promoting an inclusive workforce where individuals with disabilities could work and contribute to society without facing discrimination.