Final answer:
The Marine Hospital Service, established in 1798, marks the beginning of systematic medical care for merchant seamen in the U.S., leading to roles such as Hospital Stewards. The exact date Congress authorized the employment of Hospital Stewards is not specified in the references, but the significance in managing health and epidemics underlines the evolution of the medical profession over time.
Step-by-step explanation:
Congress authorized the employment of Hospital Stewards, who later would be known as Medical Non-Commissioned Officers (NCOs), in the early 19th century as a part of the efforts to bolster medical care for military and service personnel. The evolution of these medical roles is part of the larger history of military medicine. As Congress recognized the importance of managing health concerns, institutions like the Marine Hospital Service were established, which would eventually lead to contemporary health organizations. Though the exact date of authorization for Hospital Stewards is not provided in the provided references, it's evident that the medical profession, including the role of Hospital Stewards, evolved significantly over time.
The Marine Hospital Service, established in 1798, lay the foundation for medical care for merchant seamen and highlights the historic beginnings of organized medical support in the United States which included roles such as Hospital Stewards. This service later contributed to public health initiatives such as preventing epidemics by inspecting ships for infectious diseases, showing the deep roots of the medical system that contributes to modern health institutions like the National Institutes of Health (NIH).