Answer:
The good is that Arabic language was widely spoken, and made it easier to exchange goods ad ideas.
The bad is that Eurpeans had lost some ancient Greek writing.
This is the right one
<span>c.
hydroelectric power.</span>
Farming scenes are very difficult to set up, especially to make them seem peaceful. I had to help make a farm scene for a play and it was very hard to do with everyone moving stuff around.