Which three former Soviet-bloc countries became the first to join NATO, in 1999?

Which Austrian archduchess became Napoleon's second wife in 1810? In 1989, which pop star spent her 31st birthday with her boyfriend Warren Beatty? In June 1964, civil rights workers James Chaney, Andrew Goodman and Michael Schwerner were murdered near which Mississi… In Daniel 3, which man survived Nebuchadnezzar's fiery furnace along with Meshach and Abednego? Which three men all reigned as King of England during the year 1066? Which three kings reigned over Britain during the year 1936? In 1857 the British founded universities in which three Indian cities? On the come-out roll in craps, which total is an immediate loser for pass-line bettors?