Answer:
A) the discovery and excavations of Herculaneum and Pompeii
Explanation:
Different from a book or a drawing which can show us just a part of the building or city, and we must use our imagination to think and feel how it was the real construction, the excavations of Herculaneum and Pompeii provide us the factual prove, the real structure that was described in books and scriptures, and based on the theoretical ideas, we can make a comparison and found out the truth.
C President Theodore Teddy Roosevelt
What did they help with? Can you elaborate further
American settlers started moving west because they wanted a better life, a big factor of settlers moving west was also for land since it was very cheap, also gold and mining opportunities.
Conquered people often times became prisoners or servants to the elite of the land they now belonged to.
