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.
Although Sumerian was later displaced by Akkadian, the cuneiform system of writing persisted. Cuneiform writing was first written in columns, from the top down, although early in its existence (around 3,000 BC), it evolved into the left-to-right style of notation modern English uses today.