On August 25, 1916, President Woodrow Wilson signed the act creating the National Park Service, a new federal bureau in the Department of the Interior responsible for protecting the 35 national parks and monuments then managed by the department and those yet to be established.
Fog, the other three options would be too high in the atmosphere to cause visibility problems.
Answer:
Email being hacked, the law, and Enzo and Luca
Explanation:
it is because external conflicts is a conflict going on outside someone's body/mind.