Name The Year: Siam renames itself Thailand.?

Questions

Name the French boxer who was World Heavyweight Champion from 1920 to 1922, best remembered for his title fight with Jack Dempsey in 1921?

At which American University were four students shot dead , while protesting against the Vietnam War?

What type of bird is a 'Khaki Campbell'?

Which American city is served by Dulles Airport?

Who was the Supreme Allied Commander at the end of World War One?