What is vargracy?

What do historians call the movement of people plants animals and germs? What is Little Womens last name? Why is gravitas the most important roman virtue? How does history stop history being repeated? How did the mongol empire change once conquest was over? What is the difference between a chancellor and an emperor? What country did the crusades fight for? Which western film was the first to use the song 'home on the range'? Which continents are almost entirely in the Western Hemisphere? Where did gregorian chant come from? Where did the saying until you Peter out come from? What untapped resources did western Europe possess in the middle ages? What are the dates Trajan ruled from? The period of the Crusades lasted nearly? What is the name of the term given to the era of confrontation and competition between the US and the Soviet Union from 1946 to 1990? Are the Filipinos uncivilized before coming of the Spaniards? How were the west African kingdom involced in slave trade? When did Columbus first reach the western hemisphere? Who did the Romans get most of their ideas from? How many years are in an 8 millennia?