<span>The correct answers are B. A moat filled with water from the Euphrates River surrounded the city, and
C. Walls around the city provided protection from enemies. This was copied later by many cities beacuse it was successful. Cities would dig deep trenches and holes around the city and fill them with water and you wouldn't be able to enter without crossing the bridge that may or may not be lowered for you. </span>
<span>Based on the information above, India's government is a</span> "federal republic". Federal republic occurs when there is a centralized power, but also "provinces" that are in many ways autonomous.
He asked the Roman Catholic Church for help
This was possible for him because he was the holy roman emperor, and when he managed to beat the nobles, he also managed to increase his power through his control of the clergy, so he became the most important person in the country on numerous basis, both as a religious leader and as an emperor of the lands.
