-
Britain
Allies Of Great Britain. Britain and Belgium had a treaty to support each other if they were attacked. in 1914, Germany attacked France by moving through Belgium. Britain told Germany to retreat. -
Russia
When World War One started in August 1914, Russia responded by patriotically rallying around Nicholas II. ... By the end of 1917, the Bolsheviks led by Lenin had taken power in the major cities of Russia and introduced communist rule in those areas it controlled. -
Italy
Leading up to WWI, Italy had formed an alliance with the Central Powers of the German Empire and the Empire of the Austria-Hungary in the Triple Alliance. Italy should have joined on the side of the Central Powers when war broke out in August 1914 but instead declared neutrality. -
United States
Although the U.S. tried to remain neutral when WW1 broke out, it finally joined on April 6, 1917 after declaring war on Germany. The reason for America to become involved in WW1 was Germany's unrestricted submarine warfare, which had already sunk several American merchant ships. -
France
During World War I, France was one of the Triple Entente powers allied against the Central Powers. Although fighting occurred worldwide, the bulk of the fighting in Europe occurred in Belgium, Luxembourg, France and Alsace-Lorraine along what came to be known as the Western Front, which consisted mainly of trench warfare.
