The First World War involved many countries and empires from around the world. The main belligerents were the Allies (also known as the Entente Powers) and the Central Powers.
The Allies were primarily composed of:
- The United Kingdom
- France
- Russia (until 1917)
- Italy (from 1915)
- United States (from 1917)
Other countries that joined the Allies later in the war included Japan, Portugal, and Romania.
The Central Powers were primarily composed of:
- Germany
- Austria-Hungary
- Ottoman Empire
- Bulgaria (from 1915)
In addition to these major powers, other countries were also involved in the war. These included Serbia, Belgium, Greece, Montenegro, and Luxembourg, among others.
Overall, the First World War was a truly global conflict that involved countries from Europe, Asia, Africa, and the Americas. The war lasted for four years and resulted in the deaths of millions of people, both soldiers and civilians alike.
