The United States and the First World War - World War I Memorial (U.S. National Park Service)
World War I - Wikipedia
WW1: Why did Britain join the First World War?
What the First World War means to me - Fitzrovia News
How did the First World War start? | News | The Week UK
Timeline of World War I | Britannica
The war that did not end at 11am on 11 November - History of government
Was Europe really ready for World War I?
Russian entry into World War I - Wikipedia
World War I | History, Summary, Causes, Combatants, Casualties, Map, & Facts | Britannica
World War I: A time of upheaval | CNN
Timeline of Major War Declarations in World War I
The First World War: Was it worth it? | HistoryExtra
When Did World War I End? - Lawfare
Was World War I Avoidable? | GW Today | The George Washington University
U.S. Participation in the Great War (World War I) | Progressive Era to New Era, 1900-1929 | U.S. History Primary Source Timeline | Classroom Materials at the Library of Congress | Library of Congress
Why did the US enter World War I? : News Center
The Beginning of World War I | Facing History & Ourselves
World War I | History, Summary, Causes, Combatants, Casualties, Map, & Facts | Britannica
How did WW1 Start? | Causes of the First World War - YouTube
WW1 memories: my grandfather's story | First world war | The Guardian
