In World War I, the two main opposing sides were known as the Allies and the Central Powers.
The Allies primarily included major nations like France, Britain, Russia, and later the United States and Italy. These countries formed a coalition aiming to counter the expansionist ambitions of the Central Powers.
On the other hand, the Central Powers consisted mainly of Germany, Austria-Hungary, the Ottoman Empire, and Bulgaria. This alliance sought to consolidate power in Europe and maintain their influence over various territories.
The conflict between these two factions fundamentally altered the geopolitical landscape and led to significant social, political, and economic changes in the world.