Answer: I am most likely sure it is A ( specialize )
Explanation:
Answer:
Because without sources, we wouldn't have any proof of evidence that the history being said was true or not. With having proof, we are able to confirm the events have actually taken place.
Explanation:
A Less land was cleared for farming. With better ways to farm land less land was need to increase the yield(the amount you get)
B population increased. Because their was better yields more people could be fed and not have to worry about starvation
C Trade and industry grew More yield means more to sell.
I strongly believe it is called oral history.