When were the Sumerian texts written?

The earliest Sumerian texts were written around 3200 BCE, and they continued to be written for over 2,000 years, ending sometime around 1700 BCE.

However, it's important to note:

* Early texts are fragmented and difficult to decipher: The earliest Sumerian texts are often short, incomplete, and written in a script that took centuries to fully understand.

* The "end" of Sumerian writing is gradual: Sumerian culture and language continued to influence later Mesopotamian civilizations. The transition to Akkadian cuneiform writing was gradual, with bilingual texts appearing for a long time.

So, while we can pinpoint the earliest examples, the exact timeframe for the use of Sumerian writing is complex and nuanced.