NHSC meaning in Regional ?

Answer:

What is National Historic Sites of Canada mean?

National Historic Sites of Canada (French: Lieux historiques nationaux du Canada) are places that have been designated by the federal Minister of the Environment on the advice of the Historic Sites and Monuments Board of Canada (HSMBC), as being of national historic significance. Parks Canada, a federal agency, manages the National Historic Sites program. As of July 2021, there were 999 National Historic Sites, 172 of which are administered by Parks Canada; the remainder are administered or owned by other levels of government or private entities. The sites are located across all ten provinces and three territories, with two sites located in France (the Beaumont-Hamel Newfoundland Memorial and Canadian National Vimy Memorial).

There are related federal designations for National Historic Events and National Historic Persons. Sites, Events and Persons are each typically marked by a federal plaque of the same style, but the markers do not indicate which designation a subject has been given. The Rideau Canal is a National Historic Site, while the Welland Canal is a National Historic Event.

reference

Full Form	Category
NASA Herschel Science Center	Academic & Science
National Health Service Corps	Governmental
Nevada Health Service Corps	Medical
National Historic Sites of Canada	Regional