How many years have passed since 1930?

Which century is 1950 in? Why was rome interested in keeping peace in its conquered teritories? How did a boy become a knight in medieval? When did the first vampire start? When did ancient Rome conquer Raetia? What events spurred Europe to exploration and colonization in the fifteenth and sixteenth centuries? What was revitalism? Where does the word Scandinavia come from? What is the ethnic origin of the name Kelch? What clothing parallels can be made from the 1990's to other time periods? How did the West African slave traders obtain the slaves they sold to European? What portrayed Rome's Heroic past in The Aeneid? Why were perestroika and glasnost attmpted? From the Christmas carol Good King Wenceslas where was good King Wenceslas the king of? What did we learn from the crusades? What is goods travelled in silk road? What invention changed the cattle and farming industry? What year did the medieval times end in? What are some Inventions that were created between 1600-1750? What civilizations have been influenced by gold?