Identify the issue being kept "on file,” and comment on what this reveals about mesopotamian society in 1500 bc and the primary ways it compares to modern society in these respects.
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Well, in an ancient time,  Envelope carried a higher level of importance than it is today.

Usually, the issue that being keep on file on an envelope would be sealed by the authority (usually using some sort of logo made of wax) to proof its authentication. If the seal is not broken : Then the file is still safe

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