What is occlemency?

Oldest and most influential national literature in the western world? What does 1932 a menstrual cup look like? What is the guy call wh invented the first blue jeans? Where did virus originate? What was the Iron Curtain and who gave it that name? Where were the Ancient Romans located? Why did Europeans seize West Africans as slaves? What causes the fall of Camelot? Is the east right or left? How did Roman bridges impact the world? What two medieval society names? Technological advances in mining and in agriculture that promoted the development of the western economy in the late 1800's? How many years has it from 1970 to 2012? What is celitus? What dynasty did kublai Khan establish? Were does the word coward come from? When did the Julian calendar take effect for the first time? What is the origin of the surname Blackwood? What century is the year 2003 in? How has coal mining changed since the early 1900s?