Answer:
it is d
Explanation:
lincoln wanted to have slaves free and so did douglas
The knowledge about Ancestral Pueblo has been generated upon the preservation, conservation, and careful scientific study of the remains of this culture. Unfortunately, many entire cliff dwellings were quickly excavated by relic hunters during the 1800s, at which many cultural data was destroyed or lost. This is the reason why preservation and careful handle of the remains of Ancestral Pueblo is essential for its study.
