Final answer:
Provident Hospital and Training School in Chicago, founded in 1891, was the first school for practical nurse training in the U.S., significant for its Black leadership and as a site of medical innovations.
Step-by-step explanation:
The first school dedicated to the training of the practical nurse in the United States was Provident Hospital and Training School in Chicago, founded in 1891. This institution not only pioneered as a training space for Black nurses but was also the nation's first Black-operated hospital, showcasing an interracial staff and becoming the site of one of the earliest open-heart surgeries.
It reflected a significant era in nursing and medical history when despite facing discrimination, African Americans established pivotal health care institutions which greatly contributed to the number of trained Black nurses and the proliferation of Black hospitals.
Furthermore, Spelman College's distinction of opening the first Black nursing school in 1881, adds to the rich tapestry of African American contributions to the field of nursing during this period.