Which countries were part of the Allies in World War I?

The selection of Britain, France, and Russia as part of the Allies in World War I is accurate because these nations formed a key alliance known as the Triple Entente. This coalition was established prior to the war and was a counter-response to the Triple Alliance of Germany, Austria-Hungary, and Italy. When World War I broke out in 1914, the Allies were further joined by other nations, but Britain, France, and Russia were the primary powers at the outset.

These countries collaborated militarily and politically to oppose the Central Powers and played pivotal roles throughout the conflict. Their alliances, support for one another, and combined military strategies were critical in achieving victory in the war. Additionally, Russia was involved until 1917, when the Russian Revolution led to its exit from the conflict, but its initial role as part of the Allies is essential in understanding the broader context of the war.