Which of the following statements best describes the Roman Empire?
a. A vast and influential empire that controlled much of Europe, North Africa, and the Middle East from 27 BC to AD 476 (Western Roman Empire) or AD 1453 (Eastern Roman Empire).
b. A medieval European kingdom known for its strong feudal system and chivalric order, lasting from the 5th to the 15th century.
c. A short-lived empire in Southeast Asia known for its trade routes and naval power during the 1st century BC.
d. A powerful empire in South America known for its extensive agricultural advancements and unique architectural styles.