Final answer:
The National Theater of the Deaf was established in 1967, offering a significant contribution to the arts by promoting inclusivity and accessibility for deaf actors and audiences.
Step-by-step explanation:
The National Theater of the Deaf was established in 1967. The theater played a pivotal role in the history of the arts by providing a platform for deaf actors to perform and for audiences to experience productions that incorporate American Sign Language (ASL).
This initiative not only brought forth new opportunities for artistic expression but also highlighted the importance of accessibility and inclusivity in the performing arts.