Misc: The branch of which tree is a symbol of peace?

Questions

In 1775 "The British are Coming!" declares ---------- from horseback. ?

In 1934 First " ---------- " (laundromat) is opened, in Fort Worth, Texas. ?

In 1946 ---------- went out of business, replaced by the U.N. ?

In 1949 ---------- Republic comes into existence. ?

In 1956 ---------- marries Prince Rainier of Monaco (civil ceremony). ?