What are four accomplishments assocuated with the sumerians?

1. The Invention of Writing: The Sumerians developed the world's first writing system, known as cuneiform. This system used wedge-shaped characters impressed on clay tablets and was used for record-keeping, literature, and administrative purposes.

2. Advanced Architecture and City-Planning: The Sumerians constructed some of the earliest cities and developed sophisticated architectural techniques, including the use of mud brick, arches, and domes. Their cities were well-planned and often featured temples, palaces, and fortifications.

3. Mathematics and Astronomy: The Sumerians developed a sexagesimal (base-60) system of mathematics and made significant advancements in astronomy. They created calendars, predicted astronomical events, and studied celestial bodies.

4. Legal Codes: The Sumerians created some of the earliest known legal codes, including the famous Code of Ur-Nammu, which aimed to establish justice and fairness in society.