It is much easier to murder than settle differences peacefully.
There is also the issue of wanting power, if some can wipe out a group of people easily, then other races/creeds/nationalities will likely fall into line sooner than later. Hitler and Stalin did this prior, during, and post WW2.
The most educated people in medieval societies were priests and nuns. Most schools were located within monasteries and unlike regular people who chose whether or not to get at least some education, priests and nuns often had to educate themselves because of sacred texts. Many of them even worked as copying machines and had to rewrite books.
Answer:
well that depends on the person and the gene it is. That question is really a debate one.
Explanation:
D is your answer, hope I was able to help!
Al the following occurred except 1 2 and 3 and 4