On which date was Grand Canyon National Park established?

On which date was Grand Canyon National Park established?

• A. February 26, 1919
• B. March 15, 1950
• C. July 4, 1900
• D. January 1, 1880

Answer: (A)

The question tests understanding of when a national park becomes official through law. Grand Canyon National Park was established on February 26, 1919, when Congress passed the act creating the park and President Woodrow Wilson signed it into law. Before that, the area had already been protected since 1908 as a national monument, an important step but not the same status as a national park. The National Park Service, created in 1916, then oversaw the park under the new designation. The other dates don’t fit because they don’t match the actual date of the official legislative action and presidential signature that established the park.