Also often called the First World War or The Great War, here is Newsround's guide to what happened during World War One, a global conflict that started 110 years ago.

Discover how country alliances led to World War One and why the great war started in this BBC Bitesize history KS2 guide.

World War One And The 'Short-War Illusion' Despite the final horrific death toll, many believed war in Europe would be over in months, writes a leading historian. By Professor David Stevenson ...

The United States entered World War I after repeated threats from Germany with a declaration of war by Congress on this day in history, April 6, 1917. Fox News Media Fox Business ...

After the start of World War One the “Commission for Relief of Belgium” (CRB) was established with Herbert Hoover, a wealthy industrialist living in London at the time, as Chairman. Herbert Hoover, ...