Misc: With which musical instrument is Dizzy Gillespie chiefly associated?

Questions

Who wrote the book 'Zen and the Art of Motorcvcle Maintenance'?

In which year did the Soviet Union launch the first man-made satellite, Sputnik 1?

Emmanuel Goldstein is a character in which 1949 novel?

In 1713, the Treaty of Utrecht ended which war?

Who famously said 'We must all hang together, or, most assuredly, we shall all hang separately.'?