Final answer:
The Roman Empire grew from a small city-state to an empire that stretched across much of the known world. It expanded its territory through conquest, built a strong army, and developed impressive infrastructure.
Step-by-step explanation:
The Roman Empire grew from a small city-state to an empire that stretched across much of the known world. It expanded its territory through conquest and assimilation of different cultures. The Romans developed a strong and highly trained army, which allowed them to maintain control over a vast and diverse empire. They also built impressive infrastructure, such as roads, aqueducts, and coliseums, that connected cities and facilitated governance.
The question is: " Explain about the idea that the Roman Empire grew from a small city-state to an empire that stretched across much of the known world."