The Russian Empire was one of the most powerful empires in the world at the beginning of the 20th century. It was ruled by Tsar Nicholas II, who was an absolute monarch. The Russian Empire was involved in World War I from the start, and it suffered heavy losses. In 1917, the Russian Revolution broke out, and the Tsar was overthrown. The Russian Empire was replaced by the Soviet Union.
Ottoman Empire
The Ottoman Empire was another major empire that collapsed as a result of World War I. The Ottoman Empire had been in decline for several centuries, but it was still a significant power at the beginning of the 20th century. The Ottoman Empire was involved in World War I on the side of the Central Powers. The Ottoman Empire was defeated in the war, and it was divided up among the Allied Powers.
Austro-Hungarian Empire
The Austro-Hungarian Empire was a dual monarchy that was made up of Austria and Hungary. The Austro-Hungarian Empire was a major power in Europe, and it was involved in World War I from the start. The Austro-Hungarian Empire was defeated in the war, and it was divided up among the Allied Powers.
German Empire
The German Empire was a powerful empire that was founded in 1871. The German Empire was involved in World War I from the start, and it was defeated in the war. The German Empire was replaced by the Weimar Republic.