Misc: how many masts does a yawl have?

Questions

Which plant has flower parts apparently resembling the instruments of Christ's crucifixion?

Which country, the most populous in Africa, was suspended from the Commonwealth in 1995 for anti-democratic behaviour?

Whose dying words were reputedly, "So little done, so much to do."?

Who bought the American Chrysler car company in 1998?

Which King of England was the son of Edward the Black Prince?