Final answer:
The correct answer is Rome. It started as a city and became one of the greatest empires in history.
Step-by-step explanation:
The subject of this question is History. The question is asking about a city that became an empire. The options provided are Rome, Sparta, and Athens.
The correct answer is Rome. Rome started as a city in ancient Italy and eventually grew to become one of the greatest empires in history. It expanded its territory through conquest and established a vast empire that lasted for centuries.
Rome's height as an empire is commonly referred to as the Roman Empire, which reached its peak during the reign of emperors like Augustus, Trajan, and Hadrian. It encompassed a large part of Europe, North Africa, and the Middle East.
Learn more about Rome as a city and empire