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.
The cuneiform system 17 of writing was probably originated by the Sumerians. The oldest inscriptions unearthed to date-over one thousand tablets and fragments from the latter half of the fourth millennium B. C. which were excavated in Erech in very recent years-are in all likelihood written in the Sumerian language.