as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
tell me about the history of the us national park system.
user
the us national park system was established in 1916 to protect and preserve areas of national significance, allowing for recreational activities and research. there are now 419 national parks, covering an area of over 84 million acres, and these sites are enjoyed by millions of people each year.
assistant