UnScramble this Word: n g t e a?

Questions

In 1796 Napoleon Bonaparte married Josephine de?

In 1822 Charles ---------- of N. Y. was granted a patent for artificial teeth.?

In 1860 First ---------- ambassador to the U.S.?

In 1918 Mickey---------- , mystery writer, born.?

In 1934 Yuri---------- , first man into space, born.?