What are the contributions of sumerrians?

The Sumerians, one of the earliest civilizations in Mesopotamia, made significant contributions to human history, including the invention of cuneiform writing, which is considered one of the first writing systems. They developed a complex system of irrigation and agriculture that allowed for surplus food production, supporting urbanization and the growth of city-states. Additionally, they made advances in mathematics, establishing a base-60 number system, which influences how we measure time today. Their innovations in law, governance, and trade laid foundational principles for future civilizations.