What do they do in the cenmentary?

How long have vampires been around? what were some important inventions in the fourteenth century? Why was Europe ready for change at the end of the middle ages? How did European farmers contridute to the success of farming on the great plains? Who were the two junior emperors or Caesars that took over as co-emperors when Diocletian and Maximian stepped down in 305 AD? What is the past and past participle of tread? What are some Roman laws that are still used today? Did crusaders get married? Was The Greek empire the first truly interregional political unit in Europe? What obstacles to building the network of roads did the Romans face? What is the origin of the name Wanita? The peoples who exerted the greatest influence on Rome? What is the past tense of the verb begin? Why did they wear stolas in pax romana? What date did Columbus first reach land in the western hemisphere? If you start your period in the middle like two weeks into the pack of birth control pills when you get off can you start where you ended on the same pack? How did the actions of emperors reflect the values of society? What were the positive and negative results that this historian argues is the legacy of the Crusades? What did Johann Gutenberg invent in 1440 in Germany? What was a knights role in medieval society?