What do people traditionally put at the top of a Christmas tree?

A star or angel

Which movie features the catchphrase "Carpe diem" spoken by a teacher named John Keating? Which European country has Brussels as its capital? Who is the original performer of the hit song "If I Ain't Got You"? Under which treaty did Florida become a U.S. territory in 1819? Name the Italian region famous for dramatic Easter Passion plays.