History of Asia

What countries were in war during world 1?

The major countries involved in World War I included:

Allied Powers:

- Belgium

- British Empire

- France

- Greece (from 1917)

- Italy (from 1915)

- Japan

- Montenegro

- Portugal

- Russian Empire (until 1918)

- Romania (from 1916)

- Serbia

- United States (from 1917)

Central Powers:

- Austro-Hungarian Empire

- Bulgaria (from 1915)

- German Empire

- Ottoman Empire