What is Tigris and Euphrates river valley social classes?

The Tigris and Euphrates river valley, part of ancient Mesopotamia, had a social structure that was hierarchical and complex. At the top were the ruling class and priests, who held political and religious authority. Below them were the merchants and artisans, who contributed to the economy through trade and craftsmanship. The lower classes included farmers and laborers, while slaves occupied the lowest social tier, often working in households or on large estates.