Misc: The name of which element comes from the Greek for 'stranger'?

Questions

In 1999 ---------- again becomes the outermost planet.?

In 1787 Georg Simon---------- , scientist, born.?

In 1836 Andrew S.---------- , inventor of the Cable Car, born.?

In 1916 US and ---------- sign the Migratory bird treaty.?

In 1945 US forces defeat ---------- at Iwo Jima.?