The commonality between the Indus, Huang and Nile Valley civilizations is the fact that all began in fertile river valleys.
France, Spain and i think Britain. Im not sure of the last one
It was about the revoluionar war
The most educated people in medieval societies were priests and nuns. Most schools were located within monasteries and unlike regular people who chose whether or not to get at least some education, priests and nuns often had to educate themselves because of sacred texts. Many of them even worked as copying machines and had to rewrite books.