Answer: to spy on the Democratic National Committee
Cant be A Cant be B so it has to be (C.)
The First Crusade which was in 1096, was the only successful Crusade.
The reason why people in early farming communities able to do various kinds of work is because there was a surplus of food--meaning that while certain people were responsible for farming and growing food to eat, other people could apply their attention elsewhere, to other skills that benefitted the community. <span />
Its either C or D, but C seems closer.