What is velma's surname?

How did the western cordillera begin to form? What describes an important change to European society brought about by the Renaissance? Which explorer found the northwest passage? Why did Victorian men wear waistcoats? Who sent out the first first trading expedition to the west? Where does the word ego originate? Why did Constantine the great divorce his wife? What did the Visigoth leader Alaric do in AD 410 that had not been accomplished in over 800 years? Is the name crowther an Irish name? Who was Charlemagne and what did he do? What are some historical events that occurred in the year 1400? Did the Roman's have radiators? What happened as a result of the First Crusade? What is the summary of the fall of troy? Is there Connection between the rise of Islam and the emergence of Charlemagne's empire in northern Europe? Who where the invaders who invade during medieval period? Was the Roman Empire a turning point in history? When did the first tablet come out? How did the Crusades benefit European kings? Why and how did Islam expand?