What is one of ben Carson major achievements?

One of Ben Carson's major achievements is his pioneering work in pediatric neurosurgery, particularly his role in successfully separating conjoined twins. In 1987, he led a groundbreaking 22-hour surgery to separate twins Patrick and Benjamin Binder, who were joined at the back of the head. This operation showcased his surgical skill and innovation, earning him international recognition and significantly advancing the field of neurosurgery. Additionally, Carson has authored several influential books and served as the U.S. Secretary of Housing and Urban Development from 2017 to 2021.