For developing the first mechanical moveable type printing press
Even if it was illegal to teach slaves how to read and write, there are some white Christians who educated them to enable the reading of the Bible. Also, it<span> </span>was the<span> right thing to </span>do, other slave masters teach their slaves<span> because the skill made them</span><span> more useful for particular tasks.
Hope this helps. :)</span>
The answer would be Caliph
