In 1084, forces led by Robert Guiscard sacked Rome; they belonged to which people, who had conquered England 18 years earlier?

For a 13-year-old, 10:30 or 11:00 p.m. might be an appropriate setting for what? In 1066, German King Henry IV married which daughter of the Count of Savoy? Who was crowned King of England in Westminster Abbey on Christmas Day, 1066? What event took place in southern England in October 1066? Which state's record high, 109°F, was set on July 10, 1936, in Cumberland and Frederick? Which action figure stood 11 1/2 inches tall when he debuted in 1964 but shrank to 3 3/4 inches by 1982? About $11 billion in alleged accounting fraud played a part in which long-distance company's July 2002 bankruptcy? Which word means to honor the memory of something with an observance or ceremony?