Robert Anderson's play with a regretful musical title became a 1970 film starring Gene Hackman. What is it?

Whose son-in-law, Galeazzo Ciano, was executed by Fascists as a traitor in January 1944? Iraq was one of seven founding members of which organization in 1945? Which actor won the Best Actor Oscar for the 1982 biopic "Gandhi"? Also called the fish hawk, which bird hovers over water and dives to seize its prey? Which word means "countable, with an end or limit"? Which word for a long journey is named for a Homeric hero who took quite a long journey himself? Introduced by 18th-century poet John Byrom, which pair of names was popularized by Lewis Carroll? By the 6th century, which people had joined with the Angles to found kingdoms in Britain?