UnScramble this Word: r r k a e w e?

Questions

In 1923 Wally---------- , astronaut, born.?

In 1925 Chinese revolutionary leader Sun ---------- died.?

In 1925 First ---------- radio broadcast.?

In 1927 Raul---------- , President of Argentina, born.?

In 1930 Mohandas Gandhi began ---------- -mile march protesting British salt tax.?