In 1773, John Adams wrote in his diary, "This is the most magnificent Movement of all," about which event?

In 1915 Arthur Conan Doyle wrote a tribute on the death of W.G. Grace, a superstar of which sport? The gravitational constant G, central to the law of gravitation published in 1687, is also known as whose constant? Conceived by store employees, which department store's Thanksgiving Day parade debuted in New York City in 1924? Which Soviet leader faced off with President John F. Kennedy during the 1962 Cuban Missile Crisis? Which author concluded his four-book Berrybender Narratives with the 2004 novel "Folly and Glory," featuring Kit Carson… London's thick "pea soup" or "pea-souper" was a famous kind of what weather condition? Which degree did Condoleezza Rice earn from the University of Denver in 1974? Conducted by the U.S. government every 10 years since 1790, what is a major resource for people tracing their ancestors?