Shotgun bores, such as 12 or 20, are traditionally measured in which unit?

A 100-inch telescope collects 10,000 times more light than a telescope with a mirror of what size? What is a 1,000th anniversary called? A 1,085-mile waterway in China and a 2.5-mile waterway in Venice are both called what? Which French fashion house makes the famous perfume No. 5? Which Nabokov novel is about a 12-year-old "nymphet" who torments a grown man? A 1,200-pound man set out to lose 1,000 pounds with the help of which comedian, who ran a nutrition program in the Baha… A 1,200-year-old Moroccan city gives its name to which hat? A 1287 storm flooded the land separating the North Sea and the Zuiderzee, turning which village into a major port?