Answer :
Answer:
A. They used minimalist techniques, preserving enough materials as possible.
B. With aqueducts
C. The keystone
D. It allows for agriculture as well as a healthy population
Explanation:
Answer:
A. They used minimalist techniques, preserving enough materials as possible.
B. With aqueducts
C. The keystone
D. It allows for agriculture as well as a healthy population
Explanation: