Final answer:
The Sumerian king was the most powerful and influential man in the kingdom, responsible for leading in battle, maintaining infrastructure, and ensuring the favor of gods through religious and administrative duties.
Step-by-step explanation:
The Sumerian king was usually the most powerful and influential man in the kingdom. In ancient Mesopotamia, kingship was viewed as a divine right and was intimately linked with the religious beliefs of the time. According to Sumerian creation myths, kingship "descended from heaven," and the order of rulers was determined by the gods. A Sumerian ruler, or lugal, was obligated to lead in battle, maintain the city's infrastructure, and ensure the favor of the gods through temple building and offerings. With titles such as en, lugal, or ensi, the king was not only a political leader but also a high priest, responsible for justice and religious rituals that ensured prosperity.