The ancient civilization known for creating the first known legal code is Sumer, located in ancient Mesopotamia. The most famous legal code attributed to this civilization is the Code of Ur-Nammu, dating back to around 2100 BC. This legal framework established laws governing various aspects of daily life, including property rights, marriage, and personal conduct, emphasizing justice and accountability. The Sumerians' contributions laid foundational principles of law and governance that influenced future legal codes. This development was integral in the evolution of organized societies and the administration of justice in subsequent civilizations throughout history.