First Clay Token Accounting System

Around 8000-7500 BCE, early farmers in Mesopotamia developed a counting system using small clay tokens of various shapes. Geometric tokens—cones, spheres, disks, cylinders, and tetrahedrons—represented different commodities and quantities. Cones, spheres, and disks represented measures of grain; ovoids stood for jars of oil; cylinders denoted animals; and pyramids indicated a person-day of work. This system allowed administrators to track economic transactions without writing. The token system remained in use for approximately 5,000 years and eventually evolved into more complex accounting methods that led to the development of writing.