1001 Space Earth Nature History First Civilisations Ancient Egypt Biblical Times Ancient Greece Ancient Rome Chinese, Japanese Civilisations Indian Civilisation African Civilisation The Early Americas The Rise of Islam The Middle Ages The Renaissance Civil War and Revolution The Industrial Revolution Two World Wars 20th-century Achievements Human World Science and Technology

Which countries fought in the First World War? In 1914, France, Britain, and Russia (the Allies) formed an alliance against Germany and Austria-Hungary (the Central Powers). Other countries decided to join one side or the other, depending on which they thought would benefit them the most. Germany was joined by Turkey and Bulgaria. The Allies were joined by Italy, Japan, Greece, Portugal, and Romania. Later on, in 1917, America entered the war on the side of the Allies. Spain, Switzerland, Albania, the Netherlands, Denmark, Norway, and Sweden all remained neutral in the First World War.   Previous: Back Book: 1001 Section: History Chapter: Two World Wars