Sumerian cuneiform<span>. </span>Sumerian cuneiform<span> is the earliest known </span>writing<span> system. Its origins can be traced back to about 8,000 BC and it developed from the pictographs and other symbols used to represent trade goods and livestock on clay tablets. Originally the </span>Sumerians<span> made small tokens out of clay to represent the items ...</span>
A bond rating is a grade given to bonds that indicates their credit quality. Independent rating services such as Standard & Poor's and Moody's provide these evaluations of a bond issuer's financial strength, or its ability to pay a bond's principal and interest in a timely fashion.
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