The answer is D. Ask siri lol
Answer:
Maybe you could write because people are consentrating on their phones juring class.
Maybe they are skipping lessons .
Maybe the teachers are sleeping in class because they did not get their full sallery.
Serfs paid the owner of the land (in the form of labor) to be able to live on the land and have protection, if the serf were to leave. It was usually an unspoken agreement that they serf would stay on the land. If you still need further information you might find some on http://www.thefinertimes.com/Middle-Ages/serfs-in-the-middle-ages.html
A written language is one component of what scholars called a CIVILIZATION.
Civilization refers to the stage of human social development which is considered as very advanced. There are eight major elements of civilization and they are: Art, culture, religion, technology, trade/transportation, government, economy and written language.<span />
