Answer:
D. Printed materials became more available.
Answer:
Slaves were abused and treated badly and freemen were not. However, the role of slaves and freemen were very similar in a lot of aspects. They were ranked by their parents (if your parents are slaves, then you are born a slave. If your parents are not slaves, you are not born a slave).
Maybe higher security and enforced laws over time
Also more morals and equality, especially against blacks.
Also the aftermath of the world wars- what was learned from it
Muslim scholars began obtaining Greek treatises and started
their study and translation into Arabic a few centuries after
the Hijrah (622 A.D.) They critically analyzed, collated , corrected
and supplemented substantially the Greek science and philosophy.
After this period began what is known as the Golden Age
of Islam, which lasted for over two centuries. It is here we find
many of the great scientists of Islam who literally left behind
hundreds and thousands of books on the various branches of science.
