Why was the development of writing Sumer's most significant contribution to society?

The development of writing in Sumer, particularly cuneiform, was significant because it enabled the recording of transactions, laws, and historical events, which facilitated administration and governance. This innovation allowed for the preservation and transmission of knowledge across generations, fostering cultural and intellectual advancements. Writing also played a crucial role in commerce, enabling trade and economic growth by documenting agreements and inventories. Ultimately, it laid the foundation for complex societies and the rise of civilizations.