I understand that the red, yellow and green lines give a general idea of how bad traffic is on a road, but do they have any specific meaning, like red equals a 40-minute wait at a toll bridge? a. According to the Google Maps site, the colored lines representing traffic conditions on major highways refer to the speed at which one can travel on that road.
The oldest form of writing known to man is Cuneiform used in Mesopatamia.
Writing. Sumerian writing is the oldest full-fledged writing that archaeologists have discovered. The Ubaidians may have introduced the Sumerians to the rudiments of writing and numerical calculation, which the Sumerians used for calculating and to keep records of supplies and goods exchanged.he Sumerians wrote poetically, describing events as the work of their gods, and they wrote to please their gods. The Sumerians wrote by pressing picture representations into wet clay with a pen, and they dried the clay to form tablets.