UnScramble this Word: c o h u p?

Questions

In 1962 NASA civilian pilot Neil A ---------- takes X-15 to 63,250 m?

In 1974 Agnes ---------- actress (Endora-Bewitched), dies at 67?

In 1976 George Harrison sings the lumberjack song with ----------?

In 1898 ---------- -American War begins.?

In 1910 Mark Twain [Samuel Langhorne Clemens], author, dies in ---------- Conn.?