I believe the document is the Emancipation Proclamation, and it was issued by president Abraham Lincoln.
Pretty hard considering it was manual labor
It failed because either the change did not work well in many business settings, or it was inefficient (due to the inefficiency of the conveyer-belt system). A more accurate reason is that the circuits couldn't handle the traffic during peak hour. The customer's orders were regularly mixed up. The conveyer-belt system was not fast enough or efficient enough to handle it.
The picture is not clear :(
Mesopotamia<span>, part of the region </span>known as the Fertile Crescent<span> in Southwest Asia, lay between the Tigris and Euphrates rivers. Every year, floods on the rivers brought silt. The </span>fertile<span> silt made the land ideal for farming.</span>
