In physics, the four-dimensional continuum called spacetime combines the three dimensions of space with what?

A 32-room, 14-bathroom mansion at 518 Crestview Drive in Beverly Hills was home to the family on which sitcom? A 35-foot-long muslin stocking was used to create the cyclone in which 1939 film? A 35,000-year-old flute found in a cave is made from the ivory of which animal, extinct for thousands of years? In which city did a 381-day bus boycott begin in December 1955? Which four-star general became Ronald Reagan's first Secretary of State in 1981? Which four-time governor of Alabama, first elected in 1962, worked his way through law school as a professional boxer? A 400-year-old landmark bridge in Mostar was destroyed by Croat forces in 1993. In which country is Mostar? A 4,083-foot Vermont mountain is named for which camel feature?