But the Crusades were more than battles; they were also an information exchange. As a result of their contact with Muslims, the Europeans began to break out of their sealed-off world. They learned mathematics and, according to some scholars, how to build windmills. Windmills were a great power source that allowed Europeans to drain swamps and make use of lands that had previously gone to waste. With more land, they could grow more food. This knowledge that Muslims had helped Europe to get on its feet. And wars against the Muslims brought Europeans to sugar. –Sugar Changed the World,
Marc Aronson and Marina Budhos

How does the underlined sentence develop the central idea that the Crusades had both negative and positive results?

It relays the importance of wind energy during the Crusades.
It demonstrates that Muslims were the only group of people with good inventions.
It shows that a Muslim invention benefited European society.
It illustrates that Europeans were good at inventing new things.

"character is what you are in the dark." dwight lyman moody, in this very witty quotation of his, states we act and think differently when we are "in the dark", that is, when the spotlight is not on us and everyone can see us and consequently judge us. when reading, we tend to be sympathetic to some characters and their dilemmas. by being so, we are saying to ourselves that we agree with those characters' acts and choices, even if they are morally questionable if we have common sense in mind. dwight lyman moody's quotation applies very well to "crime and punishment", by   19th century russian writer fiodor dostoyevsky. raskolnikov, the main character, a former law student who spends his days reflecting upon life and its misery, draws a fatal conclusion: mankind is divided in two main categories: ordinary and extraordinary people. the first are the ones who lead a run-of-the-mill existence and are full of imperfections; the latter are the ones who are spiritually superior, the ones who always know better, and have the right to judge the ordinary ones, as well as eliminate them if for common good. raskolnikov considers himself as belonging to the extraordinary category and decides to kill an old lady who is a money lender and in whose house he rents a small room. raskolnikov compares himself to napoleon, who had the undeniable right to execute tons of people during the war in order to save his nation. of course what the main character decides to do is a horrendous crime, but as readers we feel it is the right thing for him to do, since the victim is a mean old woman who only thinks about money and keeps humiliating her younger sister. what one experiences is a mixture of sympathy and empathy for the character, even though he decides to commit homicide, which is not at all accepted or tolerated by civilized citizens. however, since readers are "in the dark", they allow themselves to feel in ways they would probably never dare to confess to anyone, no matter how nasty or vicious a character can be. after all, they are just reading and doing no harm. in other words, readers are in the dark and can be who they are without being judged.

falling action

explanation: