Countries Involved in WW1?   Over 100 countries were involved in
the First World War which took place in 1914 to 1919. Countries
such as Bosnia, Germany, Russia, Britain and the United States
were involved in the war. To get a comprehensive list of some of
the other countries involved in the First World War click on
this link; Q&A Related to "Countries Involved in WW1?" World War
1 was fought between the years 1914-1918 and involved more than
100 Countries, to some degree. Of those some only sent supplies
while others sent hundreds of thousands of The Allies and the
Entente. Albania, Arabia, Austria-Hungary, Belgium, Brazil,
Bulgaria, China, Costa Rica, World War I. Central Powers:
Austria/Hungry Empire. Germany. Ottoman Turk Empire. Kingdom of
Bulgaria. Triple Entente: Russia. France. United Kingdom (this
includes the British empire Explore this Topic The World War I
involved all the world's great powers assembled in two opposing
alliances: the Allies; centred around the Triple Entente of
Britain, France and