Answer :
Final answer:
Roman architecture's use of concrete revolutionized building techniques, allowing for the creation of diverse architectural structures.
Explanation:
Roman architecture heavily relied on the use of concrete to create unique and innovative structures. Concrete's strength, flexibility, and cost-effectiveness allowed the Romans to build taller, more intricate buildings at a faster pace compared to traditional stone construction. This advancement in material enabled them to experiment with different architectural forms and expand their architectural styles.