Misc: Which Danish author wrote The Snow Queen?

Questions

In 1776 Washington and his troops cross the ---------- River. ?

In 1895 America's first ---------- race starts; 6 cars, 55 miles, winner averages a blazing 7 MPH. ?

In 1943 Roosevelt, Churchill and Stalin met at---------- . ?

In 1960 Mauritania gains independence from ---------- (National Day). ?

In 1964 Mariner 4 launched. First spacecraft to fly by---------- . ?