Final answer:
The government began encouraging parents to have their disabled children admitted to pediatric clinics in the mid-20th century. The Education for All Handicapped Children Act of 1973 (IDEA) mandated inclusive education for children with disabilities.
Step-by-step explanation:
The government began encouraging parents to have their disabled children admitted to pediatric clinics in the mid-20th century. In the early 1960s, parents of disabled children started advocating for educational reforms, pressuring local, state, and federal governments. The Education for All Handicapped Children Act of 1973, later renamed the Individuals with Disabilities Education Act (IDEA) in 1990, mandated that children with disabilities have a right to an education and provided individual educational plans tailored to their needs. This act marked a significant shift toward inclusive education for disabled children.