When you or someone you are caring for is seriously ill, it is recommend that you keep EOBs for five years after the illness or condition is alleviated. If you or the patient is claiming or has claimed a medical deduction, keep the explanation of benefits for seven years.
The earliest writing can be traced to Sumer, in Mesopotamia. This system did not use an alphabet, instead it used pictographs which are symbols representing familiar objects. This type of writing was called cuneiform, or wedge-shaped writing. Egyptians used hieroglyphics, also a pictograph system.
Perhaps the most important advance made by the Mesopotamians was the invention of writing by the Sumerians. With the invention of writing came the first recorded laws called Hammurabi's Code as well as the first major piece of literature called the Epic Tale of Gilgamesh.The Wheel.erhaps the most important advance made by the Mesopotamians was the invention of writing by the Sumerians. With the invention of writing came the first recorded laws called Hammurabi's Code as well as the first major piece of literature called the Epic Tale of Gilgamesh. The Wheel.