The fighting covered much of the Middle East, including countries we now recognise as Iraq, Iran, Saudi Arabia, Palestine, Israel, Egypt, Syria, and Jordan. With this new phase, World War One ...

How was the USA involved in World War One? Find out why the USA decided to enter World War One, and how US involvement helped bring the war to an end.

For the people involved, including King ... One hundred years ago World War One set the course for the 20th century; for the countries that took part nothing would be quite the same again.