Around 3000 BC, the Sumerians invented which writing system using wedge-shaped marks?

About 250 people were buried from 1878 to 1884 in which Tombstone, Arizona, cemetery, including Billy Clanton? GR is the international vehicle registration code for which country? About 3 percent of the popular vote in the 2000 presidential election went to which party's candidate? Which mountain on the border of Nepal and Tibet was long listed at 29,028 feet? Which desert, about 3,000 miles wide, takes its name from the Arabic for "desert"? Sleeping sickness in Africa is spread by the tsetse variety of which insect? About 36,000 feet down you'll find the world's deepest spot in which trench, southwest of Guam? Many 1960s baby boys got which name, whether or not they "rowed the boat ashore"?