What kind of cake is traditionally cut together by a couple who have just tied the knot?

Cagliari is the capital of which Italian island? Caimans are most closely related to which animals? In Genesis, Cain was a farmer, while Abel kept which animals? Which spicy Cajun smoked sausage is often found in gumbo? Which calculating device do the Chinese call the suanpan? Calcutta was once the capital of British India; which newly built city became the capital in 1931? On what date did the 20th century technically begin? In 1963, a long dispute between California and Arizona over water rights to which river was settled by the Supreme Cour…