Misc: The Olduvai Gorge, famous for its fossils, is in which country?

Questions

In 1771 Sir Walter---------- , Scottish novelist, poet (Lady of Lake, Ivanhoe), born. ?

In 1771 Sir Walter Scott, ---------- novelist, poet (Lady of Lake, Ivanhoe), born. ?

In 1888 T. E.---------- , writer (aka Lawrence of Arabia), born. ?

In 1914 The ---------- Canal opened to traffic. ?

In 1918 ---------- and Russia severed diplomatic ties. ?