World War I involved one group of countries fighting another.
The war drew in all the world 's economic great powers , assembled in two opposing alliances : the Allies -LRB- based on the Triple Entente of the Russian Empire , the French Third Republic , and the United Kingdom of Great Britain and Ireland -RRB- versus the Central Powers of Germany and Austria-Hungary .	Austria	First Republic of Austria	Hungary	Kingdom of Hungary (192046)	Austria-Hungary	Austria-Hungary	Russian	Russian Empire	Central Powers	Central Powers	Allies	Allies of World War I	Triple Entente	Triple Entente	Russian Empire	Russian Empire	French Third Republic	French Third Republic	United Kingdom of Great Britain and Ireland	United Kingdom of Great Britain and Ireland	Germany	German Empire
The Allies of World War I , or Entente Powers , were the countries that opposed the Central Powers in the First World War .	Central Powers	Central Powers	First World War	World War I
The Central Powers -LRB- Mittelmchte Kzponti hatalmak ttifak Devletleri or Balama Devletleri   Tsentralni sili -RRB- , consisting of Germany , , the Ottoman Empire and Bulgaria -- hence also known as the Quadruple Alliance -LRB- Vierbund -RRB- -- was one of the two main factions during World War I -LRB- 1914 -- 18 -RRB- .	Germany	German Empire	Ottoman Empire	Ottoman Empire	Bulgaria	Kingdom of Bulgaria
