Which act established national monuments through presidential designation in 1906?

Which act established national monuments through presidential designation in 1906?

• A. The Reclamation Act
• B. The Antiquities Act
• C. The Mann–Elkins Act
• D. The National Park Service Organic Act

Answer: (B)

The key idea is presidential authority to protect important places on federal land through a formal designation. The Antiquities Act of 1906 gave the president power to proclaim national monuments to preserve archaeological and other valuable resources without needing new legislation from Congress. This created a practical, rapid tool for early conservation, used by Theodore Roosevelt to safeguard sites like Devils Tower and to establish a framework later used for many monuments. In contrast, the Reclamation Act focused on funding irrigation and land development, the Mann–Elkins Act regulated commerce, and the National Park Service Organic Act (mapped out in 1916) created and organized the National Park Service, not the general authority to designate monuments.

The key idea is presidential authority to protect important places on federal land through a formal designation. The Antiquities Act of 1906 gave the president power to proclaim national monuments to preserve archaeological and other valuable resources without needing new legislation from Congress. This created a practical, rapid tool for early conservation, used by Theodore Roosevelt to safeguard sites like Devils Tower and to establish a framework later used for many monuments. In contrast, the Reclamation Act focused on funding irrigation and land development, the Mann–Elkins Act regulated commerce, and the National Park Service Organic Act (mapped out in 1916) created and organized the National Park Service, not the general authority to designate monuments.