How does the nation save historic and prehistoric sites for future generations? Objective 1. Describe how archeology helped researchers learn about the Salado culture of the Tonto Basin, including why they lived in cliff dwellings. 2. Explain the importance of preserving remains of the Salado and other past cultures. 3. Outline the context that led to the passage of the 1906 Antiquities Act and explain the impact the Act had on the preservation of ancient ruins. 4. Debate the relative merits of preserving a historic place in their community or allowing the site to be developed. Background Time Duration: 90 Minutes.